Astragalus

Astragalus angustifolius, from here.


Belongs within: Papilionoideae.

Astragalus, containing the milk-vetches, is an extremely large genus (about 3000 species) of legumes found in Eurasia and the Americas. Some North American species are known as locoweeds because of their toxic effects on livestock.

Characters (from Xu & Podlech): Annual or perennial herbs, subshrubs, or shrubs, often sometimes spiny, glabrous or hairy; hairs basifixed or symmetrically or asymmetrically bifurcate, white or black, at margins of stipules and bracts often with minute subsessile glands. Leaves paripinnate or imparipinnate or leaflets rarely verticillate; stipules green or membranous, adnate to petiole or free, often vaginate-connate behind stem. Racemes axillary, sessile or pedunculate, loosely or densely few to many flowered. Flowers subsessile or with a distinct pedi­cel; bracteoles sometimes present. Calyx campanulate to tubular, with 5 equal or unequal teeth mostly hairy on inner side, sometimes inflated in fruit. Petals glabrous or more rarely hairy; standard mostly emarginate at apex, more rarely rounded, mostly with a ± distinct claw; wings auriculate at limb base. Stamens diadelphous, rarely monadelphous, with uniform anthers. Ovary sessile or stipi­tate; style below or at capitate stigma rarely hairy or penicillate. Legumes very variable, mostly keeled ventrally and grooved dor­sally, 1-locular, incompletely or completely 2-locular; walls membranous, leathery or rarely hard and legumes then nutlike. Seeds rectangular-reniform, estrophiolate.

<==Astragalus
    |  i. s.: A. adsurgens CL86
    |         A. angustifolious SL06
    |         A. brevicaulis D03
    |         A. candolleanus O88
    |         A. confertus O88
    |         A. corrugatus AGF98
    |         A. depressus C55
    |         A. donianus O88
    |         A. exscapus C55
    |         A. floridus O88
    |         A. frigidus O88
    |         A. grayi CL86
    |         A. hamosus PT98
    |         A. himalayanus O88
    |         A. lessertioides O88
    |         A. melanostachys O88
    |         A. monoensis KIW98
    |         A. oplites O88
    |         A. rigidulus O88
    |         A. spatulatus CL86
    |         A. strictus O88
    |         A. yunnanensis O88
    |--A. (subg. Phaca sect. Malacothrix) pseudo-beckii Sirj. & Rech. f. 1958 CK05
    `--A. subg. Pogonophace sect. Falcinellus CK05
         |--A. bakaliensis Bunge 1847 CK05
         |--A. scorpiurus CK05
         `--A. subumbellatus CK05

*Type species of generic name indicated

REFERENCES

[AGF98] Abd El-Ghani, M. M., & A. G. Fahmy. 1998. Composition of and changes in the spontaneous flora of Feiran Oasis, S Sinai, Egypt, in the last 60 years. Willdenowia 28: 123-134.

[C55] Candolle, A. de. 1855. Géographie Botanique Raisonée: Ou exposition des faits principaux et des lois concernant la distribution géographique des plantes de l’époque actuelle vol. 1. Librairie de Victor Masson: Paris.

[CK05] Chaudhary, L. B. & Z. H. Khan. 2005. Two new additions to the genus Astragalus L. (Leguminosae-Papilionoideae) of India. Bulletin of the Botanical Survey of India 47 (1-4): 53-58.

[CL86] Collins, E. I. & R. W. Lichvar. 1986. Vegetation inventory of current and historic black-footed ferret habitat in Wyoming. Great Basin Naturalist Memoirs 8: 85-93.

[D03] Dusén, P. 1903. The vegetation of western Patagonia. In Reports of the Princeton University Expeditions to Patagonia, 1896-1899, vol. 8 – Botany (W. B. Scott, ed.) pp. 1-34. The University: Princeton (New Jersey).

[KIW98] Kearns, C. A., D. W. Inouye & N. M. Waser. 1998. Endangered mutualisms: the conservation of plant-pollinator interactions. Annual Review of Ecology and Systematics 29: 83-112.

[O88] Ohba, H. 1988. The alpine flora of the Nepal Himalayas: An introductory note. In The Himalayan Plants vol. 1 (H. Ohba & S. B. Malla, eds) The University Museum, University of Tokyo, Bulletin 31: 19-46.

[PT98] Panitsa, M., & D. Tzanoudakis. 1998. Contribution to the study of the Greek flora: Flora and vegetation of the E Aegean islands Agathonisi and Pharmakonisi. Willdenowia 28: 95-116.

[SL06] Schulz, H.-J., & P. Lymberakis. 2006. First contribution to the knowledge of the Collembola fauna of the White Mountains (Lefká Óri) in west Crete (Insecta, Collembola, Isotomidae). Senckenbergiana Biologica 86 (2): 229-234.

No comments:

Post a Comment

Markup Key:
- <b>bold</b> = bold
- <i>italic</i> = italic
- <a href="http://www.fieldofscience.com/">FoS</a> = FoS