BOEEALES BRACHYSTACHYAE 49 



Phoradendron aureum n. sp. 



Not forked, the rather short branches without cataphyls, dioecious. 

 Internodes short (2x10-20 mm.), sparsely short-villous like the foliage. 

 Leaves spatulate-obovate, very obtuse, .6-1x1-2 cm., cuneately subpetioled 

 for about 3 mm. Spikes solitary, golden, short (10-15 mm.), somewhat 

 velvety, with 2 or 3 rounded joints 12- to 24-flowered when staminate : 

 peduncle 2 mm. long : scales conspicuously ciliate. Fruit?. Plate 52. 



Sonoran region of Mexico. The type from Lower California. 



Specimens examined: MEXICO. Sta. Cruz, L6wer California (Rose, 

 16848, Apr. 16, 1911, the type). 



Phoradendron brachyphyllum n. sp. 



Not forked, the short stout branches without cataphyls, dioecious?. 

 Internodes rather short (2-4x10-30 mm.), sparsely short-villous like the 

 foliage. Leaves (represented only near the ends of the branches, and 

 perhaps much larger when fully developed) obovate-oblong, obtuse, 

 scarcely .3x1 cm., sessile. Spikes mostly solitary, short (scarcely 10 

 mm.), sparingly short-villous, with about 2 ellipsoidal joints about 6-flow- 

 ered when pistillate: peduncle 2 mm. long: scales rather conspicuously 

 ciliate. Fruit ? : sepals sparingly hispid at least near the base. Plate 53. 



Sonoran region of Mexico. The type from Margarita Island. 



Specimens examined : MEXICO. Margarita Island, Lower California 

 (Rose, 16293, Mar. 16, 1911, the type). 



Phoradendron tumidum n. sp. 



Not forked, the moderate branches without cataphyls, dioecious. In- 

 ternodes rather long (3-4x40-50 mm.), rather sparsely short-villous like 

 the foliage. Leaves oblanceolate, very obtuse, .7x2.5-3 cm., cuneately 

 subsessile. Spikes solitary, long for the group (15-25 or 30 mm.), spar- 

 ingly short-villous, with about 3 ellipsoidal joints some 30- to 60-flowered 

 when staminate, the lowest joint sometimes swollen to 5 mm. in diameter: 

 peduncle 2 mm. long : scales conspicuously ciliate. Fruit ? : sepals some- 

 wliat hispid or villous. Plate 53. 



Sonoran region of Mexico. The type from Lower California. 



Specimens examined : MEXICO. LOWER CALIFORNIA. Espiritu Santo 

 (Rose, 16862, Apr. 18, 1911, the type). La Paz (Brandegee, 1892). 



PHORADENDRON DIGUETII Van Tieghem. 



Plwradendron Diguetii Van Tieghem, Bull. Mus. Hist. Nat. Paris, vol. 1. 

 p. 31. 1895. 



Not forked, the moderate branches without cataphyls, dioecious. In- 

 ternodes moderate (2x20-30 mm.), from sparingly velvety becoming gla- 



