the posterior lobe bluntly triangular and with the lateral 
lobes erect and minutely paucidentate; rostellum tri- 
angular-lingulate, becoming erect after removal of the 
pollinia, about equalling the posterior lobe; stigmas con- 
fluent beneath the rostellum. Pollinia two, pyriform. 
Costa Rica, Carpintera and San Isidro. Flowers deep maroon, 
A fairly abundant species. Leaves coriaceous. September, 1925. 
C.H. Lankester 1050. (Yyrer in Herb. Ames No. 31196.): Irazu, La 
Canada. Flowers purple. At 7,000 feet altitude. September 10, 1925 
(flowering under cultivation October 14, 1925). C.H.Lankester 1070: 
Cedral. 4. Alfaro 199: Laguna de la Chonta, northeast of Santa Maria 
de Dota, Provincia de San José, On tree. At 2,000-2,100 meters al- 
titude. December 18, 1925. Paul C. Standley 42305: Vicinity of Frai- 
janes, Provincia de Alajuela. On tree. At 1,500-1,700 meters alti- 
tude. February 12-13, 1926. Standley and Rubén Torres R. 47557. 
The following synopsis will serve to present concisely 
my conception of the group: 
1. Stelis rubens Sc//echter in Fedde Repert. 8 (1910) 
a64. 
Stelis Liecbmannu Reichenbach filius apud Hemsl. 
in Gard. Chron. ser. 2, 12 (1879) 108, nomen; Hemsl. 
in Godm. & Saly. Biol. Centr. Am. Bot. 3 (1883) 
203, nomen; Benth. & Hook.f. Gen. Pl. 8 (1883) 
490 in note, 2zomen: Schltr. in Beihette Bot. Cen- 
tralbl. 86, Abt, 2 (1918) 445, nomen. 
Stelis Tuerckheimu Schitr. in Fedde Repert. 8 (1910) 
564, 
Mexico, State of Vera Cruz, Mirador. August 1841. G. Liebmann 
168: Zacuapan, August 1906. C.A.Purpus 2149. 
GuateMaLa, Department of Alta Verapaz, Cubilquitz. At 350 
meters altitude. September 1904. H. von Tuerckheim IT, 1061 (Vype 
of Stelis rubens Schltr.); At 350 meters altitude. August 1904. H. von 
Tuerckheim 11.79 (Type of Stelis Tuerckheimii Schitr.): Department of 
Izabal, near Puerto Barrios, about 40 miles from the coast, At 175 
feet altitude. September 1930. Margaret Ward Lewis 5. 
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