VOL. II.] 



SENNA FAMILY. 



259 



5. Cassia occidentalis I,. Coffee Senna. 



(Fig. 2038.) 

 Cassia occidentalis I,. Sp. PI. 377. 1753. 



Annual, glabrous, much branched, erect, 4-6 

 high. Stipules caducous; gland borne near the 

 base of the petiole; leaflets 8-12, ovate or ovate- 

 lanceolate, acute or acuminate at the apex, rounded 

 at the base, i / -2 / long, 4 // -9 // wide; flowers -}"-" 

 broad, in short axillary racemes; stamens 10, the 

 upper 3 imperfect; calyx-lobes oblong, obtuse; pod 

 linear, glabrous, 4 / -6 / long, about 3" wide, some- 

 what curved, its margins thickened. 



In waste places, Virginia to Indiana, south to Flor- 

 ida and Mexico, and throughout tropical America, ex- 

 tending to Chili and Uruguay. Also in the warmer 

 parts of the Old World. In our area apparently 

 adventive from the South. The seeds are known as 

 Negro or Magdad Coffee. July-Aug. 



3. HOFFMANSEGGIA Cav. Icones, 4: 63. pi. 392, 393. 1797. 



Herbs, or low shrubs, with glandular-punctate bipinnate leaves, small stipules, and yel- 

 low flowers in terminal or lateral racemes. Calyx deeply 5-parted, the lobes nearly equal. 

 Petals 5, oval or oblong, imbricated, nearly equal. Stamens 10, distinct, slightly declined; 

 filaments often glandular at the base; anthers all alike, longitudinally dehiscent. Ovary 

 nearly sessile; ovules oo . Pod flat, linear, oblong or ovate, curved or straight, 2-valved, sev- 

 eral-seeded. [In honor of Joh. Centurius, Graf Hoffmansegge, a writer on Portuguese botany.] 



About 20 species, natives of western America and South Africa. Besides the following, some 



9 others occur in the southwestern United States, 

 leaflets black-punctate ; pod obliquely oblong, 

 leaflets not punctate; pod linear-oblong. 



1. H.Jamesii. 



2. H. Falcaria. 



i. Hoffmanseggia Jamesii T. & G. James' 

 Hoffmanseggia. (Fig. 2039.) 



Pomaria glandulosa Torr. Ann. Lye. N. Y. 2: 193. 1826. 



Not Cav. 1799. 



Hoffmanseggta Jamesii T. & G. Fl. N. A. i: 393. 1840. 

 Caesalpinia Jamesii Fisher, Coult. Bot. Gaz. 18: 123. 1893. 



Herbaceous, glandular black-punctate and finely pu- 

 bescent, branching at the base from a deep woody root, 

 stems 6 / -i2 / high. Stipules subulate; leaves petioled, 

 bipinnate; pinnae 5-7; leaflets 9-19, oval or oblong, ob- 

 tuse at each end, inequilateral, \ l / t ,' f -s" long; racemes 

 terminal, or lateral (opposite the leaves), elongated; 

 flowers yellow, distant, deflexed, 3 // -4 // long, the upper 

 petal spotted with red; pod flat, obliquely oblong, black- 

 punctate, about i' long and 5" wide, 2-3-seeded, tipped 

 with the base of the style. 



Prairies, Kansas to Texas, Arizona and New Mexico. 

 June-July. 



2. Hoffmanseggia Falcaria Cav. Sickle- 

 fruited Hoffmanseggia. (Fig. 2040.) 



Hoffmanseggia Falcaria Cav. Icones, 4: 63. pi. 392. 1797. 

 Hoffmanseggia slricta Benth.; A. Gray, PI. Wright, i: 56. 



1852. 

 Caesalpinia Falcaria Fisher, Coult. Bot. Gaz. 18: 122. 1893. 



Herbaceous, puberulent, not black-punctate, the 

 glands of the peduncles and petioles stalked; stems as- 

 cending or decumbent, i high or less. Stipules ovate; 

 leaves slender- petioled, bipinnate; pinnae 7-11; leaflets 

 12-21, oblong, obtuse, i^'^^long; racemes few-sev- 

 eral-flowered, elongating in fruit; pod flat, linear-ob- 

 long, curved or nearly straight, I'-i^' long, about 3" 

 wide, blunt, 8-i2-seeded, the fruiting pedicels recurved. 



Kansas (according to Fisher) to Texas, west to Califor- 

 nia. Also in Central and South America. April-June. 



