ORCHIDACE.E 



'^Hah. — Growing with H. alata Hook, in marshy soil, near H. socialis 

 Mandeville, Pur die! 



"Differs from H. alata Hook, in the texture and venation of 

 the leaves, in the flowers being about half the size, in the form 

 of the sepals and petals, and in the relatively longer lip. Differs 

 from H. quadrata Lindl. in form of petals, length of spur, and 

 other details." Fawcett & Rendle, loc. cit. 



75. H. Dussii Cogn., in Urban Symb. Antill. 6: 307 (1909). H. Dussii 



"Tuberidiis 1-3, obovato-cylindricis; caule gracillimo, sparse 

 plurifoliato ; foliis patulis vel erecto-patulis, tenuiter membrana- 

 ceis, linearibus vel lineari-ligulatis, acuminatis, basi longiuscule 

 vaginantibus ; racemo brevi, laxe paucifloro ; bracteis lanceolatis, 

 acuminatis, floribus saepius asquilongis; sepalis tenuiter 5-nervu- 

 losis, dorsali ovato-suborbiculari, apice rotundato, cucullato, 

 lateralibus paulo longioribus, patulis, ovato-oblongis, obtusius- 

 cule apiculatis, subfalcatis ; petalis anguste linearibus, acumina- 

 tis, uninerviis, rectis, sepalo dorsali leviter brevioribus; labello 

 carnosulo, sepalis lateralibus gequilongo, fere usque ad basin 

 tripartite, partitionibus lateralibus patentissimis anguste hneari- 

 subulatis, acutissimis, intermedia satis longiore, triangulari-hgu- 

 lata, tenuiter trinervulosa, acutiuscula, deflexa ; calcare pendulo, 

 recto, anguste conico, acuto, labello breviore ; processubus stig- 

 maticis deflexis, brevibus, crassis, obtusis; antherse canalibus 

 brevibus, ascendentibus. 



"Radices fusiformes. Tuberidia 1-3, alba, villosa, 1-2 cm. 

 longa. Caulis erectus, flexuosus, viridis, 25-40 cm. altus, Ij- 

 2 mm. crassus. Folia intense viridia, tenuiter multinervulosa, 

 limbo 7-11 cm. longo et 5-8 mm. lato, vagina 2-4 cm. longa. 

 Racemus 4-9-florus, 5-10 cm. longus. Bractese foliace*, 1-2 cm. 



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