AEQUATORIALES NERVOSAE 61 



mm.), smooth, with 2 or 3 joints globose and covered by 12-18 flowers 

 in 4+2 series when pistillate, or clavate and about 30-flowered when 

 staminate : peduncle 1-2 mm. long : scales scarcely ciliate. Fruit globose, 

 waxy, white ?, 3 mm. in diameter, smooth, overgrown by the receptacular 

 cups : sepals closely inflexed. Plate 70. 



Mexican tableland ( ? exclusively) on Fraxinus. The type from Hi- 

 dalgo. 



Specimens examined : MEXICO. HIDALGO. Tula (Pringle, 6630, 1897, 

 the type) . Dublan (Pringle, 11159, 13188} . 



PHORADENDRON FORESTIERAE Robinson & Greenman. 



Phoradendron Forestierae Robinson & Greenman, Proc. Amer. Acad. vol. 

 32. p. 36. 1896. 



Little forked, the moderately long slender branches with basal cata- 

 phyls only, dioecious?. Internodes moderate (2-3x30-50 mm.), more or 

 less varnished when young like the foliage, ancipital becoming terete. 

 Cataphyls a single pair 5-10 mm. above the base, spreading. Leaves lin- 

 ear-lanceolate, obtuse or submucronate, .5-.7x5-8 cm., long-attenuate at 

 base. Spikes mostly solitary, moderate (30-40 mm.), with about 3 joints 

 swollen in the middle and about 14-flowered in 4+2 series when pistillate : 

 peduncle scarcely 2 mm. long: scales and receptacular cups somewhat 

 ciliate. Fruit subglobose, white?, 3 mm. in diameter, smooth, deeply 

 covered by the thin receptacular cups : sepals closely inflexed. Plate 70. 



Cordilleran region of Mexico ( ? exclusively) on Forestiera. The 

 type from Puebla. 



Specimens examined: MEXICO. PUEBLA. Tehuacan to Esperanza 

 (Pringle, 6290, 1895, the type). Near Tehuacan (Rose & Hay, 5873; 

 Endlicli, 1899a). Tepoxuchil (Arsene, 6). 



11. NERVOSAE. 



7 Leaves rather broad and fleshy, typically coarsely nerved from the 

 base. Cataphyls on the basal joint only, 1 or less commonly 2 or rarely 

 3 pairs. Flow r ers mostly in 4+2 series. Fruit round, nearly or quite 

 smooth, with closed sepals. Mexico. 



Leaves ovate : spikes short. P. pachyartliron. 



Leaves lanceolate: spikes rather long. 



Shoots nearly terete. P. Schumanni. 



Shoots ancipital. 



Cataphyls mostly 2 pairs. P. Purpusi. 



Cataphyls 1 pair. 



Spike-joints turbinately fruited. P. nervosum. 



Spike- joints clavately fruited. P. Conzattii. 



