538 128. SALICACE. 
52811), Ichang (A. Henry, 3798!), Nanto and mountains to 
northward (4. Henry, 3798, 3816!); SmENsr: River Han 
(Piasezki ex Maximowicz); SZECHUEN : South Wushan (A. Henry, 
5211 A!); Yunnan: Kiaochetong (Delavay!). Mus. Brit.; 
Herb. Kew.; Mus. Paris. 
There is little to distinguish var. adenopoda from var. villosa, 
Wesm., except the more acuminate leaves and the larger glands 
at their insertion upon the petiole. P. tremula is, according to 
F. P. Smith, used medicinally and named ** Fu-i." 
129. CERATOPHYLLACEZ. 
(By S. A. SKAN.) 
1. Ceratophyllum demersum, Linn. Sp. Pl. ed. 1, p. 992; DC. 
Prodr. iii. p. 73; Boiss. Fl. Orient. iv. p. 1202; Hook. f. Fl. 
Brit. Ind. v. p. 639; Franchet, Pl. David. i. p. 258; Gaertn. 
Fruct. t. 44. 
Ceratophyllum verticillatum, Rozb. Hort. Beng. p. 68. 
Onni: Jehol (David, 1915); Kianast: Kiukiang (F. B. 
Forbes). Herb. Kew. 
Widely distributed iu almost all temperate and iropical 
countries. 
130. GNETACEZ. 
(By S. A. SKAN.) 
1. Ephedra equisetina, Bunge in Mém. Sav. Étr. Pétersb. vii. 
1851, p. 499; Walp. Ann. v. p. 802; Stapf, Ephedra, p. 81, t. 3, 
xxi. figg. 1-4. 
Ephedra procera (a. typica et 8. cernua), Regel in Act. Hort. Petrop. vi. 
pp. 480, 481; Franchet, Pl. David. i. p. 284. 
Norta Cura: without locality (Tatarinow!); CHIHLI: 
Siwan (David, 489, ex Franchet), Kalgan (Przewalski ex Stapf); 
KANSUR: Tatsingchan (David, 2647 !. Herb. Kew. 
The Great Balkan, Turkestan, Altai, and the whole of Central 
Asia. 
2. Ephedra Gerardiana, Wall. Cat. no. 6048 ; Royle, Ill. Bot. 
Himal. pp. 40, 348; C. A. Meyer, Versuch Monogr. Ephedra, 
p.102; DC. Prodr. xvi. 2, p. 359; Stapf, Ephedra, p. 75. 
