130 NORTH AMERICAN FLORA [Volume 32 



Calyx glabrous outside, or the tube with a few long white hairs at the base. 1. C. occidentalis. 



Calyx densely pubescent outside with short appressed hairs. 2. C. salicifolius. 



1. Cephalanthus occidentalis L. Sp. PI. 95. 1753. 



Cephalanthns opposilifplius Moench, Meth. 487. 1794. 



Cephalanthus occidentalis pubescens Raf. Med. Fl. 1: 101. 1828. 



Cephalanthus occidentalis macrophyllus Raf. Med. Fl. 1: 101. 1828. 



Cephalanthus occidentalis obtusifolius Raf. Med. Fl. 1: 102. 1828. 



Cephalanthus occidentalis brachypodus DC. Prodr. 4: 539. 1830. 



Cephalanthus acuminatus Raf. New Fl. 3: 25. 1838. 



Cephalanthus obtusifolius Raf. New Fl. 3: 25. 1838. 



Cephalanthus angustifolius Raf. Sylva Tell. 61. 1838. Not C. angustifolius Lour. 1790. 



Cephalanthus occidentalis californicus Benth. PI. Hartw. 314. 1849. 



Cephalanthus Berlandieri Wernham, Jour. Bot. 55: 175. 1917. 



Cephalanthus Hansenii Wernham, Jour. Bot. 55: 176. 1917. 



Shrub or small tree, sometimes 15 meters high, with a trunk 3 dm. in diameter, the branch- 

 lets slender, brown or grayish, glabrous or short-pilose, the internodes usually elongate; stipules 

 2-4 mm. long, deltoid, acute or acuminate, usually with glands along the margins; leaves 

 opposite or ternate, the petioles stout or slender, 0.2-3 cm. long, glabrous or pilose, the blades 

 ovate, oval-ovate, oval, ovate-oblong, oval-oblong, or narrowly lanceolate, 6-19 cm. long, 

 1-8.5 cm. wide, subcordate to rounded or sometimes acute at the base, abruptly or subabruptly 

 long- or short-acuminate at the apex, with an acute acumen, bright-green above, usually 

 lustrous, glabrous or scaberulous, the venation plane or impressed, glabrous or pilose beneath, 

 the lateral veins prominent, slender, arcuate, ascending at an angle of 45-60°; peduncles termi- 

 nal and axillary, simple or branched, stout, 3-10 cm. long, glabrous; heads 6-12 mm. in diam- 

 eter (excluding the corollas); bractlets filiform-clavate, pilose above; hypanthium and calyx 

 together 2-3 mm. long, glabrous or sparsely long-pilose at the base, the calyx about 1 mm. 

 long, shallowly 4-5-dentate, densely pubescent within, the lobes rounded, usually glandular; 

 corolla 5-9 mm. long, glabrous outside, the 4 or 5 lobes ovate or oval, sparsely pubescent 

 within, with a small black gland in each sinus; capsule 4-8 mm. long; seed solitary, brown, 

 with a large white aril. 



Type locality: North America. 



Distribution: New Brunswick to Florida, Veracruz, and California; Cuba and the Isle of 

 Pines; also in southern Asia. 



Illustrations: Lam. Tab. Encvc. pi. 59; Schkuhr, Handb. pi. 21; W. Barton, Fl. N. Am. pi. 

 91; Britt. & Brown, 111. Fl./. 3403; ed. 2,/. 3923; Nouv. Duham. 1: pi. 54; Britton, N. Am. Trees 

 /. 766; E. & P. Nat. Pfl. 4 4 : /. 23, A; Sarg. Silva pi. 711; Rep. N. J. Mus. 1910 1 : pi. 96,f.l; Rep. 

 Bot. Surv. Minn. 9: 276; Sarg. Man./. 636. 



2. Cephalanthus salicifolius Humb. & Bonpl. PI. Aequin. 

 2:63. 1809. 



Cephalanthus occidentalis salicifolius A. Gray, Syn. Fl. N. Am. I 2 : 29. 1884. 

 Cephalanthus occidentalis angustifolius Dippel, Handb. Laubh. 1: 164. 1889. 

 Cephalanthus peroblongus Wernham, Jour. Bot. 55: 176. 1917. 



Shrub or small tree, the branches reddish-brown, glabrous; stipules 2-3 mm. long, deltoid, 

 acute or acuminate, often with marginal glands, glabrous; leaves opposite and ternate, the 

 petioles stout, 1-4 mm. long, glabrous, the blades narrowly oblong, elliptic-oblong, linear- 

 lanceolate, or lanceolate, 4.5-12.5 cm. long, 0.8-2.3 cm. wide, acute to subcordate at the base, 

 rounded and apiculate to long-attenuate at the apex, glabrous or sparsely pilose beneath 

 along the veins, bright-green above, lustrous, the venation plane or the costa prominulous, 

 paler beneath, the lateral veins slender, arcuate^ascend,ing; peduncles mostly simple, 2-4 cm. 

 long, glabrous, the heads 6-8 mm. in diameter, the receptacle very densely setose; calyx and 

 hypanthium 2-2.5 mm. long, densely white-sericeous with short hairs, the calyx 1 mm. long or 

 shorter, shallowly 4-5-dentate, densely pilose within, the lobes minute, rounded, often glanduli- 

 ferous; corolla 6-7 mm. long, glabrous outside, the lobes oblong or ovate, sparsely pilose within, 

 often with black glands, in the sinuses; capsule 4-5 mm. long, densely and minutely sericeous; 

 seeds brown, with a large white aril. 



Type locality: Near Acapulco, Guerrero. 



Distribution: In wet soil, Sonora to Nuevo Le6n and Guerrero, also in Honduras. 



Illustration: Humb. & Bonpl. PI. Aequin. 2: pi. 98. 



