ginate. Inflorescences 1-flowered, single or fascicled. 
Dorsal sepal 7-8 mm. long, 38.5-4 mm. broad, ovate- 
lanceolate, acute, cymbiform, 7-nerved. Lateral sepals 
7-8 mm. long and about 8-5 mm. broad, oblong-lanceo- 
late, acute, slightly oblique, 5- or 7-nerved. Petals 6-7 
mm. long, 2.5-3 mm. broad, oblong-lanceolate, acute or 
obtuse, repand, 3- or obscurely 5-nerved. Lip 6—7.5 mm. 
long and 4-5.5 mm. broad near the apex, cuneate, trun- 
cate, retuse, somewhat constricted just above the base, 
geniculate; disc thickened and fleshy, tuberculate. Col- 
umn about 4 mm. long, auriculate-winged at the apex; 
pollinia four. 
Ecuapor: terrestrial among rocks, Pastaza River at Bafios, Province 
r (x3 A we , 
of Tunguragua, flowers brownish-tan,’’ at 1750 meters altitude, 
March 15, 1939, Penland & Summers 81 (Tyre in Herb. Ames No. 
57816). 
Scaphyglottis Summersi is not closely allied to any 
South American species. The closest ally apparently is 
Scaphyglottis bilobulata Schltr., from Central America. 
Maxillaria dichotoma (Sciitr.) L. O. Williams 
comb, nov. 
Camaridium dichotomum Schlechter in Fedde Repert. 
Beihette 7 (1921) 98—Schlechter ex Mansfeld in Fedde 
Repert. Beihefte 57 (1929) t. 98, Nr. 382. 
Ecuapor: just east of Rio Topo bridge, Province of Napo-Pastaza, 
at 1226 meters altitude, March 23, 1939, Penland & Summers 254. 
This is a rare species. The determination was made 
from the characters and the plate. 
Maxillaria luteorubra (Lindl. ) Reichenbach filius 
in Walp. Ann. 6 (1868) 539. 
Camaridium luteorubrum Lindley Orch. Lind. (1846) 
22. 
[15 ] 
