Daleae Imagines page 683 plate XLV
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Title
Daleae Imagines page 683 plate XLV
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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 XLV Dalea confusa (Rydberg) Barneby, a rare autumnal annual of w.-centr. Mexico, with stiffly erect stems, green foliage charged with a few long, weak spiral hairs, and minute purple flowers crowded into hard conelike heads. The species is uniquely modified ecologically, the only dalea known to inhabit wet muddy shores of ponds or ditches and moist swales in parkland. The typical form, var. confusa, is known only from the type-region near Ciudad Guerrero in Sierra Madre west of Ciudad Chihuahua; its flower has four epistemonous petals and the pod is half-obovate in profile, with dilated prow sloping upward to the terminal style-base. The var. hexandra Barneby, known from only two stations, one in e. Jalisco, the other in Michoacan, has only two epistemonous petals and a pod greatly dilated distally, suborbicular in profile, with a slender prow incurved through half a circle into an obliquely lateral style-base.—Habit × 1; the rest, except as noted, × 10. var. confusa: 1) top half of stem; 2) outer bract, profile view; 2a) interfloral bract, profile view; 3) flower; 4) banner, profile and ventral views; 5) wing; 6) keel-petal; 7) androecia, lateral and ventral views; 8) pod (young). var. hexandra: 1) habit; 2) stipules × 5; 3) detached primary cauline leaf × 1; 4) leaflet, dorsal view × 5; 5) outer bract, ventral view; 5a) interfloral bract, profile view; 6) flower; 7) banner; 8) keel-petal; 9) androecium; 10) pod (mature).
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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