3rd annual rare plant symposium: presentation

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The Colorado Rare Plant Technical Committee presents:

3

rd

Annual

Rare Plant Symposium

Asclepias uncialis ssp. uncialis

Dwarf milkweed

• Federal status:

BLM/USFS sensitive

• Heritage ranks:

G3G4T2T3/S2

• Global distribution:

Arizona, Texas, New

Mexico, Wyoming, Oklahoma and Eastern Colorado (Las Animas, Weld, Kit Carson, Huerfano, Pueblo, Otero, Prowers,

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• Last observed in Colorado: 5/11/2004 • Colorado occurrences: 20, 13 historical • Colorado individuals: ~500

• Primary threats: Population limitation by unknown biological requirements, altered disturbance regime, habitat loss, spread of exotic species, global climate change

• Land ownership/management: BLM, Military, Forest Service, Private, and State lands

Asclepias uncialis ssp. uncialis

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Asclepias uncialis ssp. uncialis 8.17% 0.26% 0.91% 86.09% 4.58%

Bureau of Land Management Military Reservations and Other Federal Lands National Forests and Grasslands

Private Lands State Land

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Cleome multicaulis

Slender spiderflower

• Federal status: BLM sensitive

• Heritage ranks: G2G3/S2S3

• Global distribution:

Mexico, Texas,

Arizona, New Mexico, Wyoming and

Colorado (Alamosa, Conejos, Costilla, Rio Grande, and Saguache counties)

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• Last observed in Colorado: 9/14/2005 • Colorado occurrences: 35

• Colorado individuals: ~5,132,000

• Primary threats: draining of wetlands • Land ownership/management: BLM,

National Wildlife Refuge, Private, State, and Wilderness

Cleome multicaulis

Slender spiderflower

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Cleom e m ulticaulis 9.26% 1.21% 61.31% 26.63% 1.60%

Bureau of Land Management National Wildlife Refuge Private Lands

State Land

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Delphinium ramosum var. alpestre

= Delphinium alpestre

Colorado larkspur

• Federal status: none

• Heritage ranks: G2/S2

• Global distribution:

New Mexico and

Colorado (Costilla, Chaffee, Fremont, Huerfano, Las Animas, Mineral, Park, Saguache, and Summit counties)

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• Colorado individuals: ~75

• Primary threats: Trampling from recreational activities

• Land ownership/management: Forest Service, Private and Wilderness Areas

Delphinium ramosum var. alpestre

= Delphinium alpestre

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Delphinium alpestre

95.76% 0.31%

3.92%

National Forests and Grasslands

Private Lands

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Delphinium robustum

Wahatoya Creek larkspur

• Federal status: none

• Heritage ranks: G2?/S2?

• Global distribution: New Mexico and

Colorado (

Huerfano, El Paso, Las

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• Last observed in Colorado: 1969 • Colorado occurrences: 4-9

• Colorado individuals: unknown

• Primary threats: Some species of Delphinium

are poisonous to cattle, so the genus as a whole is sometimes targeted for poisonous weed

control

• Land ownership/management: BLM, Forest Service, Private and State

Delphinium robustum

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Delphinium robustum

13.56%

19.23%

65.02%

2.20%

Bureau of Land Management

Private Lands

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Draba exunguiculata

Clawless draba

• Federal status: USFS sensitive

• Heritage ranks: G2/S2

• Global distribution: endemic to

Colorado (

Boulder, Clear Creek, El Paso,

Gilpin, Grand, Lake, Park and Summit counties)

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• Primary threats: Trampling from hikers and

mountain goats, over-collection for gardens, acid rain, air pollution, and global warming

• Land ownership/management: BLM, Forest Service, Private, State and Wilderness Areas

Draba exunguiculata

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Draba exunguiculata 2.89% 85.67% 9.64% 0.01% 1.79%

Private Lands

State Land

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Draba grayana

Gray’s Peak whitlow-grass

• Federal status: USFS sensitive

• Heritage ranks: G2/S2

• Global distribution: endemic to

Colorado (

Chaffee, Clear Creek, Grand,

Huerfano, Larimer, Park, Pitkin, Saguache, and Summit counties)

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• Primary threats: Trampling from hikers and

mountain goats, over-collection for gardens and global warming

• Land ownership/management: Forest Service, National Parks and Monuments, Private and Wilderness Areas

Draba grayana

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Draba grayana

64.41% 0.09%

11.19% 24.30%

National Parks and Monuments

Private Lands

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Draba smithii

Smith’s whitlow-grass

• Federal status: USFS sensitive

• Heritage ranks: G2/S2

• Global distribution: endemic to

Colorado (

Alamosa, Archuleta, Custer,

Las Animas, Mineral, and Saguache counties)

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• Primary threats: Habitat modification from hiking and construction

• Land ownership/management: Forest Service, Private and State

Draba smithii

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Draba smithii

8.52%

91.41% 0.07%

Private Lands

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Grindelia inornata

Colorado gumweed

• Federal status: none

• Heritage ranks: G2/S2

• Global distribution: endemic to

Colorado (

Baca, Denver, Fremont, Las

Animas, Otero, Prowers, and Pueblo counties)

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• Colorado individuals: unknown

• Primary threats: Residential and commercial development, and road maintenance activities • Land ownership/management: BLM, Military,

Forest Service, Private and State

Grindelia inornata

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Grindelia inornata 0.44% 2.02% 1.01% 95.38% 1.14%

Military Reservations and Other Federal Lands

Private Lands

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Herrickia horrida = Eurybia horrida

Canadian River spiny aster or

Horrid herrickia

• Federal status: none

• Heritage ranks: G2?/S1

• Global distribution: New Mexico and

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• Colorado individuals: unknown • Primary threats: unknown

• Land ownership/management: Private

Herrickia horrida = Eurybia horrida

Canadian River spiny aster or

Horrid herrickia

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Herrickia horrida

100.00%

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Lesquerella calcicola

Rocky Mountain bladderpod

• Federal status: none

• Heritage ranks: G2/S2

• Global distribution: New Mexico and

Colorado (

Conejos, El Paso, Fremont,

Huerfano, Las Animas, and Pueblo counties)

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• Last observed in Colorado: 2006 • Colorado occurrences: 28

• Primary threats: This species occurs in areas that are experiencing rapid development

pressures

• Land ownership/management: BLM, Military, Private, and State

Lesquerella calcicola

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Lesquerella calcicola

1.47%

11.35%

81.78% 5.40%

Military Reservations and Other Federal Lands Private Lands

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Nuttallia chrysantha =

Mentzelia chrysantha

Golden blazing star

• Federal status: BLM sensitive

• Heritage ranks: G2/S2

• Global distribution: endemic to

Colorado (

Fremont, El Paso, and Pueblo

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• Primary threats: Grazing, quarry activities, and subdivision and road construction

• Land ownership/management: BLM, Military, Private and State

Nuttallia chrysantha =

Mentzelia chrysantha

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Nuttallia chrysantha

7.08%

1.46%

73.62% 17.84%

Bureau of Land Management Military Reservations and Other Federal Lands

Private Lands State Land

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Nuttallia densa = Mentzelia densa

Arkansas Canyon stickleaf

• Federal status: BLM sensitive

• Heritage ranks: G2/S2

• Global distribution: endemic to

Colorado (Fremont County)

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• Colorado individuals: ~13,500

• Primary threats: Recreational development and road construction

Nuttallia densa = Mentzelia densa

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Nuttallia densa

22.29%

22.32% 46.76%

8.64%

Bureau of Land Management National Forests and

Grasslands Private Lands State Land

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The Colorado Rare Plant Technical Committee presents:

3

rd

Annual

Rare Plant Symposium

Oenothera harringtonii

Arkansas Valley evening primrose

• Federal status: USFS sensitive

• Heritage ranks: G2/S2

• Global distribution: endemic to

Colorado (

El Paso, Fremont, Huerfano,

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• Primary threats: Habitat loss due to urbanization

• Land ownership/management: BLM,

Military, Forest Service, Private and State

Oenothera harringtonii

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Oenothera harringtonii 15.49% 11.52% 0.12% 70.04% 2.83%

Private Lands

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Oonopsis foliosa var. monocephala

Rayless goldenweed

• Federal status: none

• Heritage ranks:

G2G3T2/S2

• Global distribution: endemic to

Colorado (

Las Animas, Pueblo, and

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• Primary threats: Maintenance on current roads or further developments may disturb or destroy individuals

• Land ownership/management: BLM, Military, Private and State

Oonopsis foliosa var. monocephala

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Oonopsis foliosa v ar. m onocephala

96.10% 0.01% 0.07%

3.81%

Private Lands

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Oonopsis sp. 1 = Oonopsis

puebloensis

Pueblo goldenweed

• Federal status: none

• Heritage ranks: G2/S2

• Global distribution: endemic to

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• Primary threats: Shale extraction by cement plants

• Land ownership/management: Private and Military

Oonopsis sp. 1 = Oonopsis

puebloensis

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Oonopsis sp. 1

95.42% 4.58%

Private Lands

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Oxybaphus rotundifolius = Mirabilis

rotundifolia

Round-leaf four-o’clock

• Federal status: none

• Heritage ranks: G2/S2

• Global distribution: endemic to

Colorado (

Fremont, Las Animas, El Paso

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• Primary threats: Highly threatened by

residential and recreational development • Land ownership/management: BLM,

Military, Private and State

Oxybaphus rotundifolius = Mirabilis

rotundifolia

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Oxybaphus rotundifolius

36.87%

61.97%

0.00% 1.15%

Military Reservations and Other Federal Lands Private Lands

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Penstemon degeneri

Degener beardtongue

• Federal status: USFS and BLM

sensitive

• Heritage ranks: G2/S2

• Global distribution: endemic to

Colorado (

Chaffee, Custer and Fremont

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• Primary threats: Motorized and non-motorized recreation, non-native plant invasion, grazing and trampling, extensive herbivory, succession, and global environmental changes

Penstemon degeneri

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Penstemon degeneri

6.37% 0.96%

87.75% 4.92%

Private Lands

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Ptilagrostis porteri

Porter feathergrass

• Federal status: USFS and BLM

sensitive

• Heritage ranks: G2/S2

• Global distribution: endemic to

Colorado (

El Paso, Lake, Park and

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• Primary threats: Alterations to the water table resulting from increased diversion and pumping for the metropolitan front range

• Land ownership/management: BLM, Forest Service, and Private

Ptilagrostis porteri

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Ptilagrostis porteri

2.54%

72.19% 25.27%

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Telesonix jamesii

James’ telesonix

• Federal status: none

• Heritage ranks: G2/S2

• Global distribution: New Mexico and

Colorado (

El Paso, Jefferson, Larimer,

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• Primary threats: Motorized and non-motorized recreation, trail or road construction and

maintenance, invasive species introduction, and horticultural collection

• Land ownership/management: BLM, Military, Forest Service, Private and State

Telesonix jamesii

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Telesonix jam esii 51.30% 42.35% 4.81% 0.63% 0.92%

Private Lands

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• Barry Johnston, USFS • Steve Olson, USFS • Brian Elliot, USFS

• Susan Spackman Panjabi, CNHP • Internet Searches

– New Mexico Rare Plants

• T. Todsen, J. Stewart, D. Bleakly, K. Heil – Center for Plant Conservation

• M. DePrenger-Levin, J. Dawson – Denver Botanic Gardens

• Other CNHP Sources:

– J. Locklear, S. O’Kane, J. Stevens, B. Jennings, A. Kratz, L. Yeatts, R. Prices, J. Cules

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