170 CAESALPINIACEAE. 



5. Chamaecrista inaguensis Britton, Bull. Torr. Club 44: 8. 1917. 



Cassia inaguensis Britton, Bull. N. Y. Bot. Gard. 3: 443. 1905. 



A much-branched shrub, 6-12 dm. high, the twigs pubescent. Leaflets 1 or 

 2 pairs, glabrous, coriaceous, rigid, shining, oblong to obovate, strongly and 

 finely many-veined, emarginate or rounded at the apex, narrowed but not 

 cuneate at the base, more or less inequilateral, 1.5-3 cm. long, 5-13 mm. wide; 

 petiole 2-6 mm. long, sparingly pubescent, bearing a stipitate gland near the 

 top; stipules lanceolate-subulate, 2-4 mm. long, pubescent, persistent; flowers 

 solitary in the axils, numerous, the filiform sparingly pubescent peduncles 2-3 

 cm. long; sepals pubescent, at least at the base, obliquely lanceolate, acuminate, 

 1 cm. long or less; petals golden yellow, about 1.5 cm. long; young legume 

 densely pubescent. 



Open scrub-land, Grand Turk Island, Caicos and Inagua. Endemic. 



i 6. Chamaecrista lineata (Sw.) Greene, Pitt. 4: 31. 1899. 

 Cassia lineata Sw. Prodr. 66. 1788. 



A usually much-branched shrub, 3-10 dm. high, the twigs finely pubescent 

 or glabrate. Leaflets 3-8 pairs, oblong, linear-oblong, oblanceolate or obovate, 

 coriaceous, 6-20 mm. long, 2-7 mm. wide, rounded and mucronulate at the apex, 

 dull, rather strongly pinnately veined, glabrous or puberulent, the petiole 3-8 

 mm. long, bearing a sessile gland; stipules lanceolate, acuminate, as long as 

 the petioles or shorter; flowers solitary in the axils, 2-3 cm. broad; petals 

 obovate; sepals lanceolate, acuminate, 7-10 mm. long; legume linear, pubescent, 

 2.5-6 cm. long, 5-6 mm. wide, short-beaked. 



Scrub, palmetto, and pine-lands, throughout the archipelago from Abaco and 

 Great Bahama to YVatling's. North Caicos, Ambergris Cay and Inagua : Cuba ; 

 Hispaniola ; Anegada ; Jamaica. Reported by Hitchcock and by Mrs. Northrop as 

 Cassia polyadena DC. and also referred to that species by Bentham ; reported by 

 Dolley as Cassia Chamaecrista L. 



4. PAEKINSONIA L. Sp. PI. 375. 1753. 



Spiny shrubs or small trees, with nearly sessile, bipinnate leaves, the 

 common petiole very short and spinulose-tipped, the 1 or 2 pairs of pinnae 

 elongated, with several-many, small leaflets, the showy, yellow flowers in 

 racemes. Calyx-tube short, the 5 narrow segments nearly equal. Petals 5, 

 spreading, nearly equal. Stamens 10, distinct; filaments villous at the base; 

 anthers all alike, versatile, the sacs longitudinally dehiscent. Ovary short- 

 stipitate, many-ovuled; style nearly filiform; stigma small and terminal. Pod 

 linear, coriaceous, torulose, striate-veined, 2-valved. Seeds oblong, longitu- 

 dinally placed, hard; endosperm horny; cotyledons flat. [Commemorates John 

 Parkinson, an English botanist, herbalist to James I, who died in 1750.] 

 Three known species, of tropical and subtropical America and Africa, the 

 following typical. 



1. Parkinsonia aculeata L. Sp. PI. 375. 1753. 



A shrub, or a tree up to about 9 m. high, with nearly smooth brown bark, 

 and slender, spreading or drooping branches, the young twigs pubescent, the 

 stipular spines 2 cm. long or less. Pinnae 1 or 2 pairs, appearing like sessile 

 pinnate leaves, 2-4 dm. long, the rachis flat, narrowly winged, bearing 10-25 

 pairs of short-petioluled, linear to obovate leaflets 1.5-8 mm. long, or some- 

 times without leaflets; racemes few-several-flowered, as long as the leaves or 



