46 AMES. 
Malaxis rizalensis sp. nov. 
Aff. M. purpureae. Caulis brevis, 3-4 cm longus, vix incrassatus. 
Folia 3-5, lanceolata vel ovato-lanceolata, acuminata, acuta, petiolata ; 
lamina 6-13 cm longa, 2.5-4.5 cm lata. Petiolus vaginans, 2.5-3.5 cm 
longus. Tota planta usque ad 2.2 dm alta. Pedunculus 9-17 cm longus, 
foliis longior. Racemus circiter 9 cm longus, laxiflorus, flores purpurei. 
Bracteae lineari-lanceolatae, 5 mm longae, dependentes. Pedicelli usque 
ad 7 mm longi. Sepala lateralia elliptica valde obtusa, 4-nervia, 3.5 
mm longa, 1.5 mm lata. Sepaluwm dorsale oblongum, obtusum, 4.5 mm 
longum, circiter 1.5 mm latum. Petala lineari-oblonga, obtusa, 3-nervia, 
4 mm longa, 1 mm lata. Labellum magnum, ovato-cordatum, obscure 
3-lobatum ; lobus medius bifidus, 3 mm longus, 3 mm latus; lobi laterales 
obtusi, minuti, producti in auriculas magnas, obtusas, inter quas columna 
prominet. Awriculae oblongae 2 mm longae, 1.5 mm latae in sicco ner- 
vosae. Columna crassiuscula. 
Luzon, Rizal Province, Bosoboso, Bur. Sci. 4561 Maximo Ramos, August, 1907. 
(Type in Hb. Bur. Sci., no duplicate) . 
M. rizalensis is a very near ally of M. purpurea and when studied with the 
aid of more material than I possess may prove to be conspecific with it. The 
stems are short and the leaves are not conspicuously congested. At least 
my material is clearly differentiated from Zollinger’s no. 2536 (Hb. British 
Museum of Natural History) cited by Ridley under Microstylis purpurea in 
the “Revision of the Genera Microstylis and Malaxis,” and by J. J. Smith in “Die 
Orchideen von Java.” The labellum of M. rizalensis resembles in general outline 
that of M. Hutchinsoniana (cf. Ames, Orchidaceae 2:°128) but is distinguish- 
able from it by its bifid apex, the divisions of which are oblong, obtuse, 1.5 mm 
long. M. Wallichii is a near ally of our species. 
Malaxis uncata sp. nov. 
M. sagittatae (J. J. Sm.) affinis. Caulis brevis vix incrassatus, usque 
ad 2cm longus. Jolia breviter petiolata, 3, quorum unum parvulum est. 
Lamina lanceolata, breviter acuminata, acuta, glabra, 5-nervia. Foliwm 
infimum usque ad 2 cm longum. YFoliwm superum 8 cm longum, 2.5-38 
em latum. Pedunculus elongatus, gracilis, 11-18 cm. longus. Bracteae 
dependentes, lineari-lanceolatae, setaceae, valde acutae, plus minus 5 mm 
longae. Pedicelli elongati, usque ad 1 cm longi. Flores flavidi. Sepala 
lateralia elliptica, ad apicem rotundata, 3 mm longa, 2mm lata. Sepalum 
posticum ovyato-lanceolatum, obtusum, 3-nervium, 3.5 mm longum, 2.5 
mm latum. /Petala linearia, 1-nervia, 4 mm longa, 0.5 mm lata. La- 
bellum integerrimum, late sagittatum; auriculis obtusis 1.5 mm longis. 
Discus usque ad 2 mm longus. Callus bilobus in disco medio. Colwmna 
crassiuscula, 1 mm longa, a tergo, prope basim, dens uncinatus. Capsula 
ellipsoidalis, 6-8 mm longa. 
Luzon, Laguna-Tayabas Provinces, For. Bur. 9552 H. M. Curran, March, 1908. 
M. uncata is closely allied to Malaxis sagittata (J. J. Sm.) (Microstylis 
sagittata J. J. Sm. Ic. Bog. 2: t. CVII, C., Die Orchideen von Java 252), from 
which it differs in its narrower leaves, yellowish-flowers, broader upper sepal and 
more broadly sagittate lip. 
