30 THE GENUS PHORADENDRON 
Fruiting spikes elongated (60-70 mm.) with separated 
whorls of berries. P. macrotomum. 
Leaves narrower, subspatulate: slender. P. Eaton. 
Staminate spikes mostly stouter and longer, the rather many-flow- 
ered joints 6-15 mm. long. Southwestern, Pacifie or Mexican. 
Spikes eanescently tomentose. 
Staminate spikes moderate (15-20 mm.). Texan. 
Р, Engelmanni. 
Staminate spikes long (40-60 mm.). North Mexican. 
P. Greggü. 
Spikes short. East Mexican. P. thyrsoideum. 
Spikes yellow-hispid, moderate. East Mexican. P. colipense. 
Spikes glabrous or sparsely villous. 
Leaves rounded. P. macrophyllum. 
Leaves oblanceolate. 
Flowers large. New Mexican. P. Cockerellii. 
Flowers moderate. Desert. P. coloradense. 
Spikes rather eanescently short-villous. Californian. 
P. longispicum. 
Staminate spikes short, the few-flowered short-villous joints seareely 
5 mm. long: fruit somewhat villous. 
Short-villous. Californian. P. villosum. 
Velvety-tomentose. Mexiean. P. tomentosum. 
Minutely rusty-pubescent. Mexican. P. puberulum. 
Berries small (3 mm.), pubescent above, with sepals scarcely one-third 
mm. long: leaves prevailingly rounded. Southwestern. 
Leaves moderate (often 25x30 mm.). Р. Coryae. 
Leaves small (10x15-20 mm.). 
Spikes closely tomentose. Texan. P. Havardianum. 
Spikes slightly villous. North Mexican. Р. Wilkinson. 
е PHORADENDRON FLAVESCENS Nuttall. 
- Phoradendron flavescens Nuttall, Journ. Acad. Philadelphia. n. s. vol. 1. 
p. 185. 1847.—v. Ettingshausen, Denksehr. Akad. Wien. vol. 32. 
- pt. 1. pl. 2.—Britton € Brown, Ill. Fl. vol. 1. £. 12/2.—A mer. Journ. 
Pharm. vol. 55. p. 421. £.—Coulter, Barnes € Cowles, Text Book. 
vol. 2. f. 1084.—Garman, Bull. Ky. Agr. Exper. Sta. no. 169. f. 12.— 
Bailey, Cyel. Am. Hort. 4 ed. 4 1319. f. 1766. 
lavescens glabriusculum Engelmann, Boston Journ. Nat. Hist. vol. 6. 
p.212. 1850. 
Viscum flavescens Pursh, Fl. Am. Sept. vol. 1. p. 114. 1814.—de Can- 
+ dolle, Prodromus. vol. 4, p. 280. 
по leucarpum Rafinesque, Fl. Ludov. p. 79. 1817. | 
V. leucocarpum de Candolle, Prodromus. vol. 4. p. 280. 1830. 
V. serotinum Rafinesque, New Fl. N. Amer. vol. 3. p. 22. 1836. 
y. ochroleucum Rafinesque, 1. c. p. 23. 1836. 
