what dilated just above the base; margins of the clinan- 
drium irregularly lobulate. 
Another specimen of the same collection shows the 
following discrepancies. A detached fragment consists 
of a moniliform cluster of three small approximate el- 
lipsoid rugose corms which produce fibrous flexuous 
roots; two of these corms are adorned at the summit with 
the short remnants of a stem. The entire plant is small- 
er in all parts than the type; the cauline bract is some- 
what above the middle of the stem and three of the flow- 
ers of the shorter raceme appear to issue from one point 
of the rachis. 
Another collection (Gentry 2473), which is referable 
to this species, appears to be in an advanced stage of 
anthesis, since it bears two immature capsules and a sin- 
gle flower at the summit of the raceme. It differs from the 
type in having commonly longer leaves (the uppermost 
of the three blades 31.6 ecm. long), in having a rather lax 
raceme (about 30.5 em. long) and smaller flowers of which 
the segments are 8 cm. or less in length. 
This species appears to be allied to Bletia campanu- 
lata Ya Llave & Lex., which is a plant difficult to in- 
terpret adequately. It differs from our conception of that 
species, however, in its somewhat broader leaves, broad- 
er lateral lobes and deeply bilobed mid-lobe of the lip 
which bears yellow markings. It lacks the striking claw 
of the mid-lobe of the lip which characterizes B. macristh- 
mochila Greenm. 
Mexico: State of Sonora, Sierra Charuco, Rio Mayo. ‘‘Upper 
Sonoran; oaks, shaded humus.... Terrestual in soil. Fl. lavender, 
laterals yellow with purple veins, upper lip purple’’. July 23, 1936. 
Howard Scott Gentry 2302 (Tyrer in Herb. Ames No. 49093): State of 
Chihuahua, Guasaremos, Rio Mayo. ‘‘Upper Sonoran; tolerant oak 
slope... . Terrestial with lavender flowers’’. August 26, 1936, Gentry 
Q4ATS. 
[ 64 | 
