Ames — New Orchids from Tropical America. 83 



Flowers numerous, crowded in a subumbellate raceme. Floral bracts 

 much shorter than the pedicels of the flowers. Pedicels slender, together 

 with the ovary 5.6 mm. long, ascending. Lateral sepals 3.25 mm. long, 

 1 mm. wide, oblong-elliptic, rounded at the tip, three-nerved. Upper 

 sepal 3 mm. long, 1 mm. wide. Petals linear, 2 mm. long. Labellum 

 ecallose, 2 mm. long, 1.5 mm. wide, rounded at the base, three-lobed in 

 front, the lateral lobes triangular obtuse much exceeded by the oblong 

 obtuse middle-lobe. Column minute. 



MEXICO, State of Pueblo. Between Tepeaca and Santa Rosa. 

 ./. N. Rose and Walter Hough 4735. June 27, 1899. (Type in United 

 States National Herbarium 346724.) 



Malaxis Rosei, sp. nov. 



Aff. M. crispifoliae (Reichb. f.) Ktze. Herba gracilis, bifoliata, foliis 

 ovato-lanceolatis vel anguste ellipticis. Flores numerosi, in racemum 

 umbellatum dispositi. Sepala oblonga. Petala linearia. Labellum sub- 

 hastatum, lobulis basUaribus acutis. 



Plant slender, 38.5 cm. tall. Roots fibrous, slender. Stem somewhat 

 tumid at the base, 11 cm. long to the base of the lowermost leaf, about 

 20 cm. long from the uppermost leaf to the base of the inflorescence. Leaves 

 6 cm. apart, about 6 cm. long, 28-41 mm. wide, the lower one ovate-lanceo- 

 late, the upper one narrower, narrowly elliptical, subacute. Raceme 

 umbelliform. Floral bracts about 1 mm. long, triangular, scale-like. 

 Pedicels slender, together with the ovary up to 1 cm. long, obliquely 

 ascending, glabrous. Lateral sepals 2.5 mm. long, about 1 mm. wide, 

 somewhat convex, elliptic-oblong, obtuse, three-nerved. Upper sepal 

 similar to the laterals, 2.75 mm. long, three-nerved. Petals linear, 2 mm. 

 long. Labellum 2 mm. long, fleshy, cymbiform-hastate, subacute, with 

 an erect uncinate lobule on each side near the base, tricarinate, the central 

 keel broad, and conspicuously thickened, the lateral carinae membranace- 

 ous. Column minute, bilobulate. 



Similar to Malaxis crispifolia (Reichb. f.) Ktze., but with different leaves, 

 and short triangular bracts. In habit similar to Malaxis rupestris (Poepp. 

 & Endl.) Ktze., but sufficiently distinct from it in the form of the labellum. 



MEXICO, State of Durango. J. N. Rose 3753. August 16, 1897. 

 (Type in United States National Herbarium 302747.) 



Malaxis tepicana, sp. nov. 



Planta monophylla. Racemus erectus, cylindraceus, multiflorus. 

 Sepala lateralia oblongo-elliptica, obtusa, plus minusve obliqua, apice 

 incrassata. Sepalum dorsale simile. Petala lineari-oblonga vel lineari- 

 spathulata, valde obtusa. Labellum cordato-triangulum, ecallosum. 

 Columna minuta. 



Plant 24-27 cm. tall, rather stout. Stem tumid at base, sheathed by a 

 large tubular loosely appressed bract, monophyllous. Leaf 6-8.5 cm. long, 

 about 1.5 cm. wide (in Rose 2034 up to 3.2 cm. wide), subacute or obtuse, 

 at base sheathing the stem. Raceme up to 13 cm. long, cylindrical, about 

 6 mm. in diameter. Rhachis sulcate. Floral bracts minute, triangular. 



