Lomatium observatory

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Lomatium observatory
Lomatium observatory (Mount Hamilton desertparsley) (32404215346) .jpg

Lomatium observatory

Systematics
Order : Umbelliferae (Apiales)
Family : Umbelliferae (Apiaceae)
Subfamily : Apioideae
Tribe : Apieae
Genre : Lomatium
Type : Lomatium observatory
Scientific name
Lomatium observatory
Constance & Ertter

Lomatium observatorium is a species of the genus Lomatium withinthe umbelliferae family (Apiaceae). This endemic species occurs in California only in the mountains of Santa Clara Counties(including Mount Hamilton near the Lick Observatory ) and Stanislaus . From The Nature Conservancy = TNC is Lomatium observatory classified as "threatened with extinction" as the ( "G1"). Common English names are: Mt. Hamilton desertparsley, Mount Hamilton lomatium.

description

Vegetative characteristics

Lomatium observatorium is a perennial herbaceous plant and reaches heights of 10 to 30 centimeters. It forms an approximately 15 centimeters long taproot . There is no caudex or a stem . The aboveground parts of the plant are hairy up to short.

The leaves, which are spread out near the ground, are divided into a petiole and a leaf blade. The petiole is 3 to 6 inches long. The greenish-gray leaf blade is three-parted and pointed with a length of 4 to 12 centimeters. The respective terminal leaf segments are lanceolate-linear with a length of 1 to 8 millimeters and a width of about 1 millimeter.

Generative characteristics

The flowering period lasts from March to May. The inflorescence shaft is 0.8 to 20, rarely up to 30 centimeters long. The double-gold inflorescence contains only one to three, rarely up to seven rays that are 1 to 8 centimeters long. The flower stalks are 1 to 5 mm. The membranous bracts are 5 to 10 millimeters long and 3 to 4 millimeters wide and lanceolate to ovate with ciliate edges.

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The petals are yellow.

The achenes are egg-shaped with a length of 7 to 10 millimeters. They have about 0.6 mm wide wings.

Occurrence and endangerment

In the extremely small distribution area in northern California, Lomatium observatorium thrives at altitudes of (1219) 1280 to 1330 meters. Lomatium observatorium grows on volcanic soils and partially metamorphic sedimentary substrates in rocky clearings in pine-oak forests and in the adjacent chaparral.

Only four sites of Lomatium observatorium are known that were also discovered more than 20 years ago. There may be a risk from fire and displacement by invasive plant species .

Taxonomy

The first description of Lomatium observatory carried out in 1996 by Lincoln Constance and Barbara Jean Ertter in post-manual adjustments in Californian Lomatium (Apiaceae) In: Madroño , Volume 43, Issuze 4, pages 515-517, figure first

Individual evidence

  1. ↑ a b Lomatium observatorium at Tropicos.org. Missouri Botanical Garden, St. Louis, Retrieved October 25, 2019.
  2. ↑ a b c d e f g h i j Lomatium observatorium - Constance & Ertter Mt. Hamilton Lomatium . In: NatureServe Explorer . TNC . Retrieved October 24, 2019.
  3. ↑ a b c d e f Lomatium observatory. In: Inventory of Rare and Endangered Plants. Retrieved October 26, 2019 .
  4. ^ Lomatium observatory. In: 2014 county distribution map. Biota of North America Program, accessed October 23, 2019 .
  5. ^ Lomatium observatory. In: USDA Plants Database. United States Department of Agriculture, Natural Resources Conservation Service, accessed October 26, 2019 .
  6. ↑ a b c d e f g h i j k l Lincoln Constance, Margriet Wetherwax, 2017: data sheet - Lomatium observatorium MOUNT HAMILTON LOMATIUM In: Jepson Flora Project (eds.): Jepson eFlora , Revision 5.
  7. ^ L. Constance, B. Ertter: Post-manual adjustments in Californian Lomatium (Apiaceae) . In: Madroño . 43, No. 4, 1996, pp. 515-521.

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