1020] STANDLEY, NEW SPECIES OF CAMPNOSPERMA 111 



CAMPNOSPERMA FROM PANAMA 



Paul C. Standley ^ 



Collections of plants obtained in Panama in recent years have revealed 

 the occurrence in that region of many genera of plants, especially of trees, 

 which previously were believed to be confined to the forests of Brazil and 

 the adjoining countries. It is now evident that the Panamanian flora is 

 much more closely allied with that of Brazil than has been believed here- 

 tofore. Another striking example of this relationship is afforded by the 

 new species of Campnospernia here described. This genus, which is a mem- 

 ber of the Anacardiaceae, has been known in America from a single species, 

 Campnosperma gummijera (Benth.) L. March., a native of the Amazon 

 region of Brazil. The other members of the group are natives of the East 

 Indies. 



Campnosperma panamensis Standley, sp. nov. 



Ramulis 12 mm. crassis, cortice rugoso obtectis, novellis stellato-puberu- 

 lis, dense foliatis; foliis breviter petiolatis, oblpngo-obovatis, 27 cm. longis, 

 11.5 cm. latis, apice rotundatis, basi cuneatis, coriaceis, supra glabris, sub- 

 tus dense stellato-lepidotis, costa supra canaliculata, subtus valde prom- 

 inente, nervis lateralibus subparallelis, utrinque latere circiter 20, sub 

 margine adscendentibus; paniculis interrupte spiciformibus, longe pedun- 

 culatis, 13-18 cm. longis, stellato-puberulis, floribus pedicellis perbrevibus 

 crassis fultis; calycis lobis ovato-rotundatis, 1.5 mm. longis, stellato-puberu- 

 lis, obtusis; petalis triangulari-ovatis, acutiusculis, costa extus stellato- 

 puberula; staminibus petalis brevioribus, filamentis glabris; disco crasso, 

 1 mm. alto, 2-2.5 mm. lato; fructu juveniU ovoideo, lepidoto. 



TjT)e in the herbarium of the Arnold Arboretum, collected "at the Chiriquicito 

 Lagoon on the south side of Panama where it covers an area of about 6 square 

 miles " and received from A. D. Little, Inc., of Cambridge, Massachusetts, in August, 



1920. 



writer 



Anacard 



Brasiliensis (xii.^ t. 82 [1876]). 



ijera have been seen by the wr 

 iven by Engler in Martius's F 

 namanian plant agrees very 



wuth the plate, except in its longer panicles. Engler, however, describes the 

 leaves, sepals, and fruit as glabrous, and in his later monograph of the Ana- 

 cardiaceae 2 he uses the presence or absence of pubescence upon the leaves 

 as a key character, placing C gnmmifera among the species with glabrous 

 leaves. The only species of Campnosperma described as having pubescent 

 leaves is C. macrophylla (Blume) Hook, f., an East Indian tree. In that, 

 however, the pubescence is stellate and comparatively coarse, while the pu- 



* Published by permission of the Secretary of the Smithsonian Institution. 

 « In De Candolle, Monog. Phan. iv. 316-321 (1883). 



