An illustrated flora of the An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian ed2illustratedflo02brit Year: 1913 Genus 3. SENNA FAMILY. 337 3. CHAMAECRISTA Moench, Meth. 272. 1794. Herbs or low shrubs, with evenly pinnate leaves, often sensitive to the tou';h. mostl\ persistent strongly nerved stipules, and yellow flowers in small axillary clusters or solitary in the axils. Calyx-lobes acuminate. Corolla somewhat irregular, th
An illustrated flora of the An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian ed2illustratedflo02brit Year: 1913 Genus 3. SENNA FAMILY. 337 3. CHAMAECRISTA Moench, Meth. 272. 1794. Herbs or low shrubs, with evenly pinnate leaves, often sensitive to the tou';h. mostl\ persistent strongly nerved stipules, and yellow flowers in small axillary clusters or solitary in the axils. Calyx-lobes acuminate. Corolla somewhat irregular, three of the five petals smaller than the others. Stamens 10, all usually with perfect anthers opening by terminal pores. Pods linear, flat, more or less elastically dehiscent, the valves twisting. [Greek, low crest.] About 100 species, widely distributed in temperate and tropical regions. Besides the following, some 15 others occur in the southern United States. Type species: Chainaeciista nictitans (L.) Moench. Flowers 2'-4' wide, short-pedicelled. i. Flowers I'-i!4'wide, slender-pedicelled. 2. I. Chamaecrista nictitans ( L.) Moench. Sensitive Pea. Wild Sensitive-plant. Fig. 2441. 5- 1753- 1794. Annual, erect or decumbent, branching, more or less pubescent, 6-15' high. Stipules subu- late-linear, persistent; leaves petioled, sensitive, bearing a small gland near the base of the petiole; leaflets 12-44, linear-oblong, obtuse and mucronate at the apex, rounded and oblique at the base, inequilateral, 3'-8' long, i'-ij' wide; flowers 2-3 together in the axils, short-pedi- celled, 2'-4' broad; calyx-lobes acute or acumi- nate ; stamens 5. all perfect; pod linear, nearly glabrous, or pubescent, I'-iV long. 2-2^' wide. In dry soil, Maine to Georgia, west to Indiana, Kansas and Texas. Also in the West Indies. July-Oct. 2. Chamaecrista fasciculata (Michx.) Greene. Partridge Pea. Large-flowered Sensitive Pea. Prairie Senna. Fig. 2442. xf^ . Cassia fasciculat
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