326 MR. H. N. RIDLEY’S REVISION OF THE 
caulis basi vaginis paucis vestitus, 3-4 uncias longum; folia 2, 
petiolata vel sessilia ovata, basi late cuneata vel rotundata 
acuminata, subopposita, 5 uncias longa, 3 uncias lata; scapus 
angulatus; flores virides; bractex triangulo-acuminat® ; sepala 
ligulata trinervia; petala lineari filiformia, quinquenervia; labellum 
subcordatum ovatum, apice tridentatum, carina crassa denticulata 
utrinque juxta limbum ; carina integerrima interjecta. 
Costa Rica, Volean de Barba, Wendland. 
MICROSTYLIS EXCAVATA, Lindl. Bot. Reg. 1838, Misc. 93, ap- 
parently belongs to this series; but neither the description nor 
the specimen preserved are sufficient for identification. It came 
from America. 
20. M. FASTIGIATA, Reichb. f. in Linnea, xxv. p. 834, xxviii. 
p. 384.—M. ophioglossoides, Bot. Reg. t. 1290; Link 4 Otto, 
Ie. Pl. Har. ii. t. 5 (non Nutt.).—Malaxis maianthemifolia, 
Rich. § Gal. in Ann. Sc. Nat. 1845, p. 18; non Schlecht.—Dienia 
maianthemifolia, Reichb. f. in Linnea, xix. p. 368.—Ophrys 
ensifolia, Pavon, MSS. 
Caulis gracilis, 3-uncialis, basi pseudobulbosa, vaginis 2-3 
pseudobulbo globoso annotino approximato; folia bina sub- 
æqualia lanceolata ovata obtusa 2 uncias longa, 1 unciam lata, basi 
amplexicaulia, vaginis brevibus, dissita ; scapus 3-7-uncialis, 
angulatus apice nutante; racemus #-uncialis, multiflorus ; 
bractez brevissime lanceolate ; flores minimi virides ?, pedicellis 
gracillimis cum ovariis }-uncialibus ; sepala ligulata lorata ; petala 
angustiore breviora; labellum sepalis squale, obspathulatum 
cochleariforme, basi ovata concava, linea mediana elevata in gibbo 
desinente, auriculis subnullis, apice acuto lineari semitereti. 
Mexico (Pavon) ! (Capt. Lyon)! Vallée de Mejico (Schmidt) ! 
(Schaffner) ! (Bourgeau 652)! Jalapa, Serra Colorado (Schiede) ! 
Cordillera Oaxaca (Galeotti)! no. 5059! (Sallé)! Caraco Moun- 
tain, Coahuila (Palmer), no. 1300! 
Santa Martha (Purdie). 
Bolivia, Sorata (Mandon), no. 1135 ! 
The figure of the complete plant in Bot. Reg. 1296 is ap- 
parently M. fastigiata, the lip of the flower being represented as 
ovate, entire, and acute; but by the side of it is an enlarged 
drawing of a flower with a lip exactly similar to that of 
M. ophioglossoides, oblong and 3-lobed. 
