Daleae Imagines page 661 plate XXXIV
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Title
Daleae Imagines page 661 plate XXXIV
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Creator(s)
R. C. Barneby
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Publisher
The New York Botanical Garden Press
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Description
PLATE XXXIV Dalea lachnostachya Gray, an erect herb up to 4 dm tall with densely back-warty stems, few but large leaflets pilosulous both sides and dense racemes of finally nodding, hispidly long-pilose calyces. The petals, proportionately small, little exserted and quickly shed, are vivid blue. Note the membranous, flask-shaped bracts that form a loose cone at top of the expanding inflorescence, the relatively long banner, the overlapping keel-petals, the dilated style-tip, and the greatly thickened prow of the pod, characters shared by the diffuse D. erythrorrhiza (Pl. XXXII) but by no other dalea. A species of arid grassland transitional to desert, D. lachnostachya is dispersed widely over the Chihuahuan Desert, from s.-centr. Chihuahua to extreme n.-w. Coahuila, trans-Pecos Texas, and s.-w. New Mexico, thence extending w. to the margins of the Gila Basin in Arizona and adjoining Sonora, and flowers mostly after summer rains, between July and October. — Stem × 1; the rest × 5. 1) top half of robust flowering stem; 2) segment of mid-stem + stipules and base of petiole; 3) segment of raceme-axis, showing pedicels & glands; 4) interfloral bract, profile; 5) flower; 6) petals, the banner in ventral view; 7) keel, opened up; 8) androecium; 9) ovary & style; 10) fruiting calyx; 11) pod, profile and seen from above.
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Taxonomy
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Copyright Statement
Copyright The New York Botanical Garden Press
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License Statement
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Image Type