EASTWOOD. — SOME UNDESCRIBED MEXICAN PHANEROGAMS. 603 



IV. SOME UNDESCRIBED SPECIES OF MEXICAN 

 PHANEROGAMS. 



By Alice Eastwood. 



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 cm. 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 quinquevalvata pilosa, apice dehiscenti. — Oaxaca : Clajiaco, 

 Galeotti, no. 214. This belongs to Sect. Gymnolobus Dctre. 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 cm. longis et 

 latis, apice obtusis, basi cordatis, palmate quinquenerviis reticulatis, 

 investis sparse supra, densiore subter cum pilis tenuissimis obscure 

 articulatis adpressis simplicibus vel basi bifurcatis ; 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 fiavo-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. — Durango : 

 Otinapa, July-August, 1906, E. Palmer, no. 431 (type, in hb. Gray). 

 This belongs to Sect. Gymnolobus Dctre. 1. c. 30 and is distinguished 

 from the other pentandrous species of the section by the remarkable 

 two-lipped flower. 



