Draba


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Draba

 

(whitlow grass), a genus of plants of the family Cruciferae. They are low-growing perennial and, less frequently, biennial or annual herbs; some are subshrubs. They have entire leaves, which are often in a rosette. The flowers are small, yellow or white, and racemose. The fruit is a silicle or, less frequently, a pod. There are approximately 300 species, distributed in temperate and cold regions of Eurasia and America. In the USSR there are over 90 species, found predominantly in the arctic and the alpine zones, along arid, rocky slopes, rocks, and small meadows. The annual Draba nemorosa grows on dry, open slopes, meadows, and steppes; it is also a weed in fields. The perennial D. sibirica is found primarily in alpine meadows, in the tundra, and on limestone slopes. Many species are cultivated as ornamentals.

REFERENCE

Tolmachev, A. I. “Krupka— Draba L.” In Flora SSSR, vol. 8. Moscow-Leningrad, 1939.

T. V. EGOROVA

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Draba altacia###Lepidium apetalum###Ephedra gerardiana###Oxytropis immersa
The proposed pioneer species are Meconopsis racemosa, Meconopsis horridula, Arenaria delavayi, Draba oreodoxa, Cremanthodium smithianum, Polygonum macrophyllum, and Carex capilliformis.
Ao lado disso, alguns itens (1, 4, 11, 12, 15) apresentaram DIF somente de acordo com o indice apresentado em logits (Linacre & Wright, 2009; Tennant & Pallant, 2007), e nenhum dos itens apresentou DIF somente no criterio proposto por Draba (1977), sugerindo que esse e um criterio mais rigoroso em relacao ao de logits.
Aunque la SMO no presenta comunidades de vegetacion alpina, en las cimas de los picos mas altos (Cerro Gordo, Mohinora, Huehuento y otros), por encima de los 3200 m existe vegetacion herbacea baja (plantas enanas de Sedum, Draba, Senecio, Poa, Bouteloua, Muhlenbergia), asi como liquenes y musgos, caracteristicos de vegetacion subalpina (Gonzalez Elizondo et al., 2007).
THE PROPAGATION AND RE-INTRODUCTION OF ENDANGERED PLANT SPECIES ASPLENIUM HETERORESILIENS, DRABA APRICA, GENTIANOPSIS CRINITA.
Descurainia pinnata (Walter) Britton X Descurainia sophia (L.) Webb ex X Prantl Draba nemorosa L.
Some genera that were restricted to the Austral-Antarctic regions migrated from the south temperate zones along the Andes as they rose from the lowlands, whereas several important herbaceous genera of the Holarctic region, such as Cerastium, Hypochaeris, Draba, and Lupinus arrived to paramo along the northern migration route after formation of the Isthmus of Panama.
In Spartacus, Varinia does not kneel before the crucified Spartacus (83), and Crassus does not kill Draba (86).
In the same category, but somewhat more localised and peri-anthropic in their distribution, are the annuals Asperugo procumbens, Cardaria draba, Galium spp.
Before Bhalla another minor tributary called Bhangorgad which originates from Dasu nallah and Draba nallah and a spring called Bibrharu pani, adds to the volume of Neeru Nallah.