ORCHIDACEiE 



H. lactijhra the sketch in Lindley's herbarium at Kew, and a flower taken 

 var. buccahs from the plant collected by Heyde & Lux, which Eaton referred 

 to var. buccalis. 



Great caution should be observed in considering the char- 

 acters of the labellum. The origin of the lateral arms follows no 

 definite rule, and is more hkely to cause confusion, if relied on, 

 than to assist in specific distinction. 



In my opinion H. lactiflora and H. clypeata are very closely 

 allied, and will be found to offer no satisfactory characters on 

 which to establish two distinct species. 



The position of the var. buccalis, on the other hand, is not 

 clear. 



More material than I have seen and a thorough study of types 

 are necessary to establish certainty regarding H. clypeata and 

 its allies. 



GUATEMALA, Santa Rosa 



Cerro Gordo, August, 1892, Heyde ^ Luoc, J. D. Smith distr. (no. 3858) (1). 

 I refer this here on account of its green color, prominent stigmas, and 

 its native locality. (A. A. E.) 



H. clypeata 51. H. clypeata Lindl, Gen. & Sp. Orch. 311 (1835), in Benth. 

 PI. Hartw. 52, 53 {1MQ)\ Reichb.f., in Linnaa 18: 407 (1844), 

 28: 381 (1856), excl. syn., in Bonpl. 4: 210 (1856);iJm5., Biol. 

 Cent. Am. 3: 305 (1884), excl. Galeotti no. 5151; KrdnzL, in 

 Engl. Bot. Jahrb. 16: 131 (1893) in part, Orch. Gen. et Sp. 1: 

 313 (1898) in part; Schltr., in Bull. Herb. Boiss. 7: 539 (1899); 

 Ames, in Smith Enum. PI. Guat. pt. 7, 51 (1905).— H. lacti- 

 flora Reichb.f., in Linnaea 28 : 381 (1856) as syn., not A. Rick. — 

 ? H. flexuosa Reichb.f., loc. cit., as to syn., not Lindl. ; Krdnzl., 

 in Engl. Bot. Jahrb. 16: 131 (1893), Orch. Gen. et Sp. 1: 251 

 (1897). — H. guadalajarana Krdnzl., Orch. Gen. et Sp. 1 : 313 



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