64 THE GENUS PHOBADENDKON 



veiny, cuneately petioled for 20-30 mm. Spikes mostly clustered, stout, 

 long (30, becoming 55-60 mm. in fruit), smooth, with about 5 clavate 

 joints 8- to 12-flowered in 4+2 series when pistillate or with double this 

 number of flowers when staminate : peduncle scarcely 5 mm. long : scales 

 little ciliate. Fruit subglobose, smooth, deeply immersed in the recep- 

 tacular cups : sepals closely inflexed. Plate 75. 



Cordilleran region of Mexico ( ? exclusively) on Quercus. The type 

 from Oaxaca. 



Specimens examined: MEXICO. OAXACA. Coyula to Cuyamacalco, 

 Cuicatlan (Conzatti & Gomez, 2380, June 22, 1909, the type). Xaya- 

 catlan (Rusby, Mar. 1910). 



A form with thicker less nerved leaves not attenuate at tip, and short 

 acutely compressed internodes, from Tecomatlan to Pueblo Vie jo, Oax. 

 (Conzatti, 1897), may be distinguished as var. tecomatlana (PI. 75). 

 With two pairs of cataphyls respectively some 10 and 60 mm. above the 

 base and leaves scarcely 12 cm. long, it is var. nocJiixtlanensis (Huauh- 

 chilla, Nochixtlan, Oaxaca, at 2500 m. (Conzatti & Gonzales, 1187, June 

 1901). Plate 76. 



12. LANCEOLATAE. 



Leaves moderately fleshy, narrowly lanceolate, rather obscurely basi- 

 nerved. Cataphyls a single pair, on the basal joint only. Flowers in 

 4-J-2 series. Fruit ovoid, smooth, with closed sepals. Mexico. 



Shoots quickly terete : leaves heavy-nerved. P. lanceolatum. 



Shoots ancipitally compressed : leaves fine-nerved. P. falcatum. 



PHORADENDRON LANCEOLATUM Engelmann. 



Phoradendron lanceolatum Engelmann, Mem. Amer. Acad. n. s. vol. 4. 

 p. 59. 1849. 



Not forked, the moderate branches with basal cataphyls only, dioe- 

 cious. Internodes moderate (2-3x20-40 mm.), smooth, nearly terete. 

 Cataphyls a single pair, about 8 mm. above the base, acute, spreading. 

 Leaves short-lanceolate, obtuse, 1-1.5x6-8 cm., indistinctly nerved, cune- 

 ately subpetioled for about 5 mm. Spikes mostly solitary, moderate 

 (30-40 mm.), rather stout, smooth, with about 5 oblong joints 6- to 10- 

 flowered when pistillate and 15- to 20-flowered in 4+2 series when stam- 

 inate: peduncle 2-4 mm. long: scales ciliate. Fruit ovoid, 3x4 mm., 

 smooth : sepals closely inflexed. Plate 77. 



Eastern Sierra Madre region ( ? exclusively) on Quercus. The type 

 from northern Mexico. 



Specimens examined : MEXICO. Rinconada, between Monterrey and 

 Saltillo (Gregg, 255, the type; TJiurber, 865). 



