48 MISSOURI BOTANICAL GARDEN. 
4.5 em. long, 6 to 12 mm. wide, round at the apex, nar- 
rowed at the base, channelled above; petioles .5 to 1 cm. 
long, sulcate; stipules obsolete; dioecious; staminate 
raceme 3 to 5 em. long, stout, interrupted, 12- to 25- 
flowered; pedicels about 2 mm. long; flowers about 2.5 
mm. broad; sepals acute and deltoid; petals densely ciliate, 
oblong-clavate, 2.5 to 8 mm. long, longer than the sepals; 
stamens about 15; receptacle pilose; pistillate raceme 2 to 
3 cm. long, bearing about 6 flowers; pedicels about 2 mm. 
long at maturity of the subglobose capsule, which is about 
5 mm. tall, triquetrous, 1- to 3-seeded; styles bicleft, 
stout, about 1.5 to 2 mm. long; seeds punctate-impressed, 
truncate at the oblong caruncle, 3.5 to 4 mm. long. — This 
cannot be C’. Cascarilla and very doubtfully even a form of 
C’. linearis, because of the dense pubescence on the upper 
side of the leaves. See foot-note, page 46. — Plate 13. 
The material observed so far is as follows: Curtiss, no. 2525c, Bis- 
cayne Bay, 1881, no. 5360, Sand ridges near the ocean, Palm Beach, 1895; 
Palmer no. 488, Biscayne Bay, 1874; Hitchcock, Watling, Bahama, 1890. 
b. Shrub or annual; branches striate, except in C. betulinus; the 4- to 
5-parted calyx accrescent; margins of leaves not entire, base 
biglandular. 
C. BetuLinus Vahl, Symb. Bot. 2: 98. 1791, in Geiseler, 
Crot. Monog. 53. 1807; Muell. Arg. in DC. Prod. 
157: 595. 1866; Chapman, Suppl. Fl. South. U.S. 
648. 1883; 1. c. 4380. 1897. [3d ed. ] 
Shrub, 1 to 2 m. high, thichotomous; branches slender, 
pubescent with short, spreading, stellate hairs, the tips 
incanous; leaves ovate, 1 to 2 cm. long, apex obtuse, base 
rotund or truncate and biglandular, crenato-dentate, basilar _ 
margin subentire, stellate, the hairs fine and loosely spread- 
ing above, subappressed-tomentose below; petioles about 
one half the length of the leaves; stipules small, short and 
thick; racemes 2 to 3 cm. long, many flowered; bracts 
lanceolate, 1 to 2 mm. long, persistent, their stipular 
