Daleae Imagines page 839 plate CXXIII
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Title
Daleae Imagines page 839 plate CXXIII
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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 CXXIII Dalea leptostachya DeCandolle and D. sericocalyx (Rydberg) Riley, the first certainly the second probably shrubby, are both Mexican, and each is taxonomically isolated in sect. Parosela, forming a monotypic series. Adult plants of D. leptostachya may reach treelet stature of 3 m, with a slender trunk and thin crown of pliantly bending branchlets. The foliage, always ample but of thick-texture, varies from glabrous to thinly pubescent; the petals are concolorous, greenish-yellow fading brown or livid. The species is locally plentiful around the eastern margins and floor of the Balsas Depression in southern Mexico, often in thorn-forest, flowering in fall and winter. The poorly known D. sericocalyx has been collected once only in Sierra Madre Occidental, probably on the Pacific slope east of Mazatlan. Notable features are the ample, plane leaflets of submembranous texture, a loose spike of extremely long-toothed calyces, and curious linear-oblong glands on the ovary. Color of petals is unknown.— Branchlet of D. leptostachya and detached leaf of D. sericocalyx × 1; the rest × 5. D. leptostachya: 1) flowering branchlet; 2) petiolules; 3) interfloral bract, dorsal view; 4) flower; 5) banner, ventral view; 6) wing; 7) keel; 8) androecium; 9) pod. D. sericocalyx: 1) cauline leaf; 2) leaflets, dorsal view; 3) flower; 4) interfloral bract; 5) banner, ventral view; 6) wing; 7) keel-petal; 8) androecium; 9) ovary after fertilization.
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Taxonomy
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Copyright Statement
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Image Type