EASTWOOD, — SOME UNDESCRIBED MEXICAN PHANEROGAMS. 603 
IV. SOME UNDESCRIBED SPECIES OF MEXICAN 
PHANEROGAMS. 
By Auice Eastwoop. 
Aristolochia oaxacana, n. sp., caulibus 1—-paucis ex radice tuberosa 
prostratis tenuiter pilosissimis ramosis 1-2 dm. longis; foliis ovato- 
cordatis 2-4 cm. longis 2 cm. latis, apice acutis basi cordato-auriculatis 
ad petiolum brevem inter auriculas cuneate decurrentibus ; floribus in 
axillis solitariis, bracteis obscuris ovatis ad basim pedunculi brevis in- 
sertis ; calyce albo-purpureo unilabiato 3.5 em. longo recto, tubo 12 mm. 
longo paulo constricto ad squamam interiorem infundibuliformem, limbo 
lineari antice ad tubum decurrenti ; columna crasso-stipitata ; antheris 
5 ; stigmate peltato quinquelobato ; ovario clavato pilosissimo ; capsula 
turbinata 1 j q leat pilosa, pi dehiscenti. — OAXACA : Clajiaco, 
Galeotti, no. 214. This belongs to Sect. Gymnolobus Detre. in Ann. 
Sci. Nat. ser. 4, ii. 30, and is related to C. cordata, which, however, 
has a bilabiate calyx. 
Aristolochia cordata, n. sp., caulibus plurimis ex radice longa 
flava, simplicibus vel ramosis prostratis gracilibus striatis tenuiter 
albo-pilosissimis ; foliis subsecundis ovato-cordatis 2-4 em. longis et 
latis, apice obtusis, basi cordatis, palmate quinquenerviis reticulatis, 
investis sparse supra, densiore subter cum pilis tenuissimis obscure 
articulatis adpressis simplicibus vel basi bifureatis ; petiolis 5-12 mm. 
longis pilosissimis ; floribus solitariis in axillis, pedunculis laminatis stri- 
atis pilosissimis cum bractea ovata apice inserta ; calyce bilabiato albo- 
purpureo exteriore piloso, interiore glabro ; labio superiore cucullato 
6-10 mm. longo, inferiore deflexo et conduplicato obcordato 1 cm. lato ; 
tubo flavo-lineato 11-12 mm. longo paulo constricto ad squamam inte- 
riorem infundibuliformam et sub os; columna sessili; antheris 5 ; 
stigmate peltato quinquelobato; ovario clavato pilosissimo basi ad 
pedicellum attenuata ; capsula oblongo-turbinata quinquevalvata rugu- 
losa, valvulis dorso crenati-alata, apice dehiscentibus. — Duranco : 
Otinapa, July-August, 1906, E. Palmer, no. 431 (type, in hb. Gray). 
This belongs to Sect. Gymnolobus Detre. |. ¢. 30 and is distinguished 
from the other pentandrous species of the section by the remarkable 
two-lipped flower. 
