154 PROCEEDINGS OF THE AMERICAN ACADEMY 



divergent, the lower sepals falcate and rather narrow, the upper ob- 

 long ; lip yellow, elliptical with cuneate base, obtuse or emargiiiate, 

 3 lines long. — Cool rich cailons in the mountains near Monterey, 

 San Luis Potosi; June, 1890 (n. 2797). 



Arethusa granuiflora. Flowering stem leafless from a tuber- 

 ous base (6 to 8 lines in diameter), 6 to 8 inches high, with 2 to 4 

 very short closely sheathing bracts ; foliar stem contiguous, sheathed 

 below and bearing two long- acuminate narrow leaves (G to 12 lines 

 broad) exceeding the scape : flower solitary, large, the unguiculate 

 sepals oblong-lanceolate, acuminate, falcate, 15 lines long; lip 2 

 inches long or more and \^ broad, purple, 3-lobed, erosely denticu- 

 late ; column shorter than the sepals : ovary slender, 8 lines long. — 

 Banks of cailons near Guadalajara; October, 1889 (n. 2997). The 

 condition of the flowers prevented an examination of the androecium, 

 but there seems no reason to doubt the correctness of the generic 

 reference. 



PoGONiA (Triphora.) Mexicana. Stem 2 to 4 inches high from 

 a small tuber, sheathed at base and bearing 4 or 5 sessile leaves, the 

 lower round-ovate, acute, about 6 lines long, the uppermost lanceo- 

 late: flowers 2 or 3, pedicellate, soon recurved; perianth 5 lines long, 

 the greenish sepals and white petals linear, acute ; lip purplish above, 

 with three green median nerves, cuneate to a short broad claw, 

 3-lobed, the middle lobe subdeltoid, undulate-margined : column 3^ 

 lines long. — In Tamasopo Caiion, San Luis Potosi; August, 1890 

 (n. 3557). Resembling P. pendula, and probably the same as Parry 

 & Palmer's plant from the same region, mentioned by Mr. Hemsley 

 as in Herb. Kew. 



Habenaria filipeua. Low, from a small oblong-ovate tuber, 

 glabrous, 4 to 8 inches high: leaves erect, longer than the internodes, 

 oblong-ovate or the lowest ovate, acute, mostly sheathing at base, 1 to 

 1^ inches long; floral bracts foliaceous, acuminate, nearly equalling 

 the flowers : spike loosely rather few-flowered, 2 or 3 inches long : 

 sepals acute, the lower oblong-ovate and subfalcate, the upper sub- 

 orbicular, 2 lines long ; petals bifid, the upper lobe oblong, falcate, 

 nearly oqiialliiig the upper sepal, the lower filiform, 3 lines long or 

 more ; lip o-lobed, the lobes all filiform, the lateral 4 lines long, ex- 

 ceeding the somewhat broader middle one ; spur 7 or 8 lines long, 

 acute, a little enlarged toward the end. — On moist grassy slopes, 

 Flor de Maria, State of Mexico; July, 1890 (n. 3187). Tliis was 

 also previously collected by Mr. Pringle in Chihuahua in 1887 (n. 

 1375''), distributed as //. Gnadalnjarana, var (?). It differs from that 



