330 Field Museum of Natural History Botany, Vol. II 



Aristolochia oaxacana Eastwood, Proc. Am. Acad. xliv. 603 (1909). 

 Complete flowering and fruiting specimens secured by Professor C. 

 Conzatti at Camino Montelobos, Dto. Nochixtlan, De Rancho Nopalera 

 a Huitzo, State of Oaxaca, Mexico, altitude 2000 m., 23 June, 1907, 

 no. 1838 (hb. Field Museum) have been compared with the type of the 

 above species and accord in all essential details. The present collec- 

 tion records another station in determining the distribution of a very 

 interesting and distinct species. 



Celosia Orcuttii Greenman, sp. nov. 



Suffruticosa (?); caule striato-anguloso ferruginoso glabro; foliis 

 brevipetiolatis lanceolatis acutis vel mucronatis integerrimis basi 

 attenuatis utrinque glabris flavo-viridibus ; inflorescentiis pyramido- 

 paniculatis usque ad 4 dm. longis 2.5 dm. latis inconspicue ferrugineo- 

 puberulentis vel hirtellis; floribus sessilibus; bracteis trangulare-ovatis 

 acutis 1 mm. vel minus longis; bracteolis obliquo-ovatis 1. mm. longis 

 uninerviis; sepalis ovatis vel ovato-ellipticis subnavicularibus circiter 

 2.5 mm. longis acutis vel obtusis 5-7-nerviis glabris pallido-straminibus 

 et persistentibus ; cupulo staminorum circiter 1 mm. alto; utriculo ma- 

 ture incluso subgloboso circumscisse dehiscens; seminibus lenticularibus 

 nitidulis 1-1.5 mm - diametro. Mexico. State of Colima: vicinity of 

 Colima, 24 October, 1910, C. R. Orcutt, no. 4587 (hb. Field Museum cat. 

 no. 283404). 



A species similar to C. Moqiiini Guillem., but with smaller yellowish- 

 green leaves, reddish-brown stem and inflorescence, and with uniformly 

 pale-stramineous instead of more or less fuscous sepals, and with a 

 sessile instead of stipitate utricle. 



Pfaffia Hookeriana (Hemsl.) Greenman, comb. nov. Hebenanthe 



Hookeriana Hemsl. Biol. Cent. -Am. Bot. iii. 19 (1882). 

 Apoplanesia paniculata Presl Symb. Bot. i. 63, t. 41 (1831). 



The punctate leaflets, persistent samara-like calyx-lobes and short 

 glandular fruit render this species, although apparently somewhat 

 rare, an easily recognized one. It is well represented by specimens 

 secured by Dr. G. M. Emrick at Tecoman, State of Colima, Mexico, 

 November, 1906, nos. 153, 154 (hb. Field Museum), and by collections 

 made at Manzanillo, Mexico, 1890-91, Dr. Edward Palmer, nos. 967, 

 13730, and 1810 (hb. U. S. Nat. Museum). These collections extend 

 the known geographical range of the species considerably to the north 

 of previously recorded localities. 



Caesalpinia Gaumeri Greenman, sp. nov. 



Arbor 15-20 m. alta inrerma; amis ramulisque teretibus glabris 

 cortice griseo tectis; foliis petiolatis stipulatis impari- vel abrupte- 



