Daleae Imagines page 851 plate CXXIX
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Title
Daleae Imagines page 851 plate CXXIX
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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 CXXIX Dalea scandens (Mill.) R. T. Clausen, a polymorphic complex of small shrubs native principally to the coastal plain around the Gulf of Mexico from the lower Rio Grande in Texas to Yucatan, and to the hill country at low and middle elevations in Central America, represented on the Pacific slope of Mexico by the disjunct var. occidentalis (Rydb.) Barneby. The plants vary from densely pubescent to glabrous, have greenish-creamy petals that early turn dull rose, brown, or blackish, and at least the dorsal calyx-tooth sharply hooked at tip. The hooked teeth distinguish D. scandens from the very closely related D. carthagenensis (Plates CXXV-CXXVII), the range of which is more southern and eastern, extending from s. Florida to Peru and Bolivia, but overlapping that of D. scandens only between s. Mexico and Nicaragua. The var. paucifolia (Gray) Barneby, prevalent from Texas to Yucatan and Cuba, has more or less villosulous foliage and 7-11 leaflets; in Guatemala it passes s. into var. vulneraria (Oerst.) Barneby which has mostly 11-17 leaflets. Both of these have glabrous or glabrescent calyx-tube, in this and the smaller flower differing from the Pacific var. occidentalis. The vars. scandens and gaumeri (Standi.) Barneby, rare plants of the Gulf slope in Veracruz and Yucatan, differ collectively from the rest in their slender growth, glabrous foliage (otherwise like that of the sympatric var. paucifolia), and from each other in pubescence and proportions of the calyx. — Flowering branchlets × 1; the rest × 5. var. paucifolia: 1) branchlet; 2) flowers, at and after anthesis; 3) banner, ventral view; 4) keel. var. vulneraria: 5) branchlet; 6, 6a) calyces. var. occidentalis: 7) flower. var. scandens: 8) branchlet; 9) flower; 10) banner, ventral view; 11) keel. var. gaumeri: 12) fruiting calyx + pod.
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Taxonomy
Dalea scandens var. paucifolia (J.M.Coult.) Barneby
Dalea scandens (Mill.) R.T.Clausen
Dalea scandens var. gaumeri (Standl.) Barneby
Dalea scandens var. occidentalis (Rydb.) Barneby
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Image Type