Daleae Imagines page 713 plate LX
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Title
Daleae Imagines page 713 plate LX
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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 LX Dalea tenuifolia (Gray) Shinners and D. gattingeri (A. Heller) Barneby, slender diffuse perennial herbs with green foliage and, from late spring into summer, tassels of vivid magenta-purple flowers. Features common to both are a spike never extremely dense or conelike, and ovoid calyces with pale, deeply but symmetrically cleft tube contrasting with green-tipped teeth, the whole hairy outside from base upward, in D. tenuifolia with long weak hairs, in D. gattingeri with shorter ones, silvery-pilosulous. The leaves of D. tenuifolia, a prairie-clover common on the high plains from w. Kansas w. and s. to centr. New Mexico and w. Texas, may be either glabrous or thinly hairy, but the base of each stem is always densely pilose and the interfloral bracts are broad and papery. Stems and leaves of D. gattingeri, local in calcareous glades and barrens of centr. Tennessee to adjoining Georgia and Alabama, are at least remotely pubescent distally but glabrous near the rootstock, and the interfloral bracts are firmer and caudate. All flowers in the spike of D. gattingeri open in rapid succession, forming a long colorful club-shaped or headlike tassel at full anthesis whereas those of D. tenuifolia mature in a more gradual series, a band of color moving slowly up the more pointed spike over a period of several days. — Stems and inflorescences × 1; the rest × 1. D. tenuifolia: 1) base and summit of same stem, pilose below, glabrate upward; 2) leaflets, hairless; 3) do., pilose; 4) bracts, all ventral view; 5) flower at early anthesis; 6) do., shortly after anthesis; 7) calyx, laid open; 8) petals, the banner ventral view; 9) pod. D. gattingeri: 1) tip of flowering stem; 2) stipules; 3) leaflets, more and less involute; 4) bracts, profile view; 5) flower; 6) calyx, laid open; 7) fruiting calyx; 8) petals, banner ventral view; 9) androecium.
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Taxonomy
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Copyright Statement
Copyright The New York Botanical Garden Press
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License Statement
Image may not be reproduced without the permission of The New York Botanical Garden Press
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Cite This Image
Image may not be reproduced without the permission of The New York Botanical Garden Press
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Image Type