324 MR. H. N. RIDLEY’S REVISION OF THE 
$ Umbellulate. 
14. MICROSTYLIS OPHIOGLOSSOIDES, Nuttall, Genera Amer. Pl. 
ii. p. 196; Lindl. Orch. Pl. p. 19; Chapman, Fl. S. Un. States, 
p. 453.—Malaxis unifolia, Michaux, Fl. Bor. Am. ii. p. 157.— 
M. ophioglossoides, Willd. Sp. Pl. iv. p. 90; Loddiges, Bot. 
Cab. t. 1116. 
Caulis 2-5 uncias longus, basi pseudobulbosus, pseudobulbo 
parvo globoso-conico; vaginis duabus, superiore majore circiter 
dimidio caulis quali; folium singulum ovatum ellipticum obtu- 
sum, amplexicaule subpatulum, 14-3 uncia: longum unciam latum ; 
scapus erectus vel subnutans gracilis angulatus, 3-uncialis, majore . 
parte racemosus ; racemus demum laxus multiflorus ; flores parvi 
virides, pedicellis tenuibus patulis vel recurvis, $-uncial:bus ; 
bractew brevissime lanceolate, 1 mm. longe; sepala lanceolata 
subobtusa, lateralia latiora obliqua, labello »quales ; petala an- 
gusta linearia; labellum oblongum, apice trilobo, lobis lateralibus 
majoribus lanceolatis obtusis, medio multo minore, cuspidiformi 
acuto, venis medianis incrassatis, basi vix concava, auriculis nullis ; 
columna basi paullo angustata, apice dilatato, dentibus brevis ; an- 
thera majuscula, stigma ovale grande ; capsula elliptica }-uncialis. 
North America: Canada, Rainy Lake and River (Dr. Richard- 
son) !; Lake Region and Ontario (Macoun)!; Pembina, Winnipeg 
(Bourgeau)!; Newfoundland (Morrison) !; Massachusetts, New 
Jersey (Nuttall) !; Maine (Torrey) !; Philadelphia (Gavin Wat- 
son)!; S. Carolina (Cree)!; Vermont (Pringle) !; Ball Moun- 
tains, Tennessee (Rugel)!; Florida (Chapman)! 
Mexico: San Luis Potosi (Parry & Palmer), no. 859! 
15. M. UMBELLULATA, Lindl. Orch. Pl. p. 19; Griseb. Flor. 
Brit. West Ind. p. 612.—Malaxis umbellulata, Swartz, Prodr. 
p. 119; Flor. Ind. Occ. p. 1444; Willd. Sp. Pl. iv. p. 90.—M. 
umbelliflora, Lunan, Hort. Jamaica, i. p. 478. 
Caulis3-uncialis, gracilis, basi pseudobulbosus radicibus crebris; 
folia bina valde inequalia membranacea reticulata lanceolata 
acuminata, maximum 4 uncias longum, 2 uncias latum ; scapus 
gracilis angulatus (pentagonus fide Swartz), apice nutante, 
6 uncias longus ; racemus brevissimus circiter dimidio unciam 
longus; bractez setaces, 1 unciam longs ; flores virides? minuti, 
3 vel 4 modo simul evoluti, pedicellis patulis tenuissimis unciam 
longis; sepala angusta, ligulata, obtusa ; petala multo breviora; 
labellum trilobum, lobis lateralibus brevibus rotundatis obtusis, 
medio lineari longiore angusto obtuso. 
Jamaica, Swartz! Macfadyen! Dominica, Eggers! 
