458 PROCEEDINGS OF THE AMERICAN ACADEMY 



3 lines long, nearly as long as the cylindrical part of the perianth; the 

 dilated portion 9 lines long including the broadly triangular lobes (3 

 lines long): style shorter than the filaments: capsule 6 lines long. 

 Rio Blanco, on shaded hillsides ; June. (9.) — An"amole"; awash 

 made from the roots is used as an insecticide upon animals. 



Bkavoa geminiflora, Llav. & Lex. Rio Blanco, on grassy hill- 

 sides ; August. (345, 346, with yellow and red flowers respectively.) 



DioscoREA REMOTiFLORA, Kunth ? Rather nearly answering to 

 Schlechtendal's description, but the very slender compound racemes 

 (as in D. sparsijlora, Hemsl.) solitary in the axils and much exceed- 

 ing the leaves, or in a terminal panicle, and the fruit smaller (7 or 8 

 lines long). The seeds are nearly surrounded by a suborbicular wing, 

 3 lines broad. Rio Blanco, in shady ravines ; August. (331.) 



DioscoREA Jaliscana. Very slender, glabrous throughout or 

 nearly so : leaves thin, on slender petioles (6 lines long), 9-nerved, 

 triangular- or ovate-cordate, short-acuminate, \h inches long, usually 

 puberulent on the veins beneath : racemes compound, axillary or ter- 

 minal, the staminate with branches 2 or 3 inches long, loosely flowered, 

 the pedicels 1^ lines long: male perianth parted nearly to the base, 

 \\ lines broad, greenish yellow; stamens 3, with short triangular fila- 

 ments : fruiting racemes an inch long or more, the very shortly pedi- 

 cellate fruit 4 lines long: seed winged at the base, with a narrow outer 

 margin. Rio Blanco ; September. (542.) 



EcHEANDiA TERNiFLORA, Ort. Rio Blanco, in wet ravines; July. 

 (185.) 



MiLLA BiFLORA, Cav. Rio Blauco, on hillsides September. 

 (529.) — "San Nicolas." 



Bessera elegans, Schultes. Barranca. (128.) 



NoTHOscoRDUM FRAGRANS, Kunth. Rio Blauco, in wet bottoms; 

 June. (70.) 



Calochortus Bonplandianus, Schult. f. Rio Blanco, common 

 on grassy hillsides ; August. (338.) 



Calochortus Hartwegi, Benth., at least the flowering speci- 

 mens ; but hardly distinct from the last. Rio Blanco, on grassy sides 

 of ravines, not common ; September. (580.) 



Xyris ? Guadalajara, in a swamp ; September. (445.) — 



No species of the genus has hitherto been known from Mexico. 



PiSTiA STRATIOTES, Linn., var. obcordata, Engler. {P. ohcor- 

 <:?«<«, Mich x.) Lake Chapala ; October. (723.) 



Eriocaulon Benthami, Kunth. Rio Blanco, in wet bottoms ; 

 June. (44.) 



