184 University of California Puhlications in Botany [Vol. 6 



femineo sessili praeditas, bracteis minutiilis; floribus femineis 1-3 

 axillaribus plerumque solitariis, pedicellis filiformibus demiim 1.5 cm. 

 longi.s. nnifloris ; sepalis ovarioqiie dense albo-hirsiitis ; stylis 3, ca. 

 5 mm. longis, ultra medium in lacinia.s divisis. Fructus deest. 



Pilose throughout, especially about the leaves. The staminate 

 flowers are borne on axillary spikes which always bear a single female 

 flower at the top. The axillary female flowers are sometimes 2-3, their 

 bracts not evident, the filiform one-flowered pedicels become finally 

 1.5 cm. long, the laciniae of the styles of the flower terminating the 

 spike of male flowers are much shorter than those of the axillary 

 flowers. Collected at San Geronimo, Oaxaca, on gravelly plains. No 

 7346. Type, Herb. Univ. Calif. No. 174853. 



Acalypha lignosa sp. nov. 



Fruticulus verisimiliter dioieus : ramulis novellis pubescentibus : 

 foliis ovatis acuminatis, basi interdum angustatis, margine crenato- 

 dentatis, utrinque glabris, usque ad 6.5 cm. longis, 2.5 cm. latis; petiolis 

 pubescentibus ea. 1 cm. longis. stipulis lineari-lanceolatis ca. 5 mm. 

 longis: spicis femineis ramulos terminantilnis ca. 1.8 cm. longis; 

 bracteis 1-floris, 4 mm. altis quam latitudine brevioribus, ca. 7-dentatis, 

 hirsutis simul pilis glanduliferis instructis : ovario hirsute ; stylis supra 

 medium paucilacinuligeris : capsula hirsuta ; seminibus levibus. 



The leaves are confined to the new growth terminating the branches. 

 The specimens are all female and probably came from one bush. Col- 

 lected near San Geronimo, Oaxaca. No. 7158. Type, Herb. Univ. 

 Calif. No. 175045. 



Croton Purpusii sp. 



nov. 



Ramis cra.ssis, juvenibus dense stellato-tomentosis : foliis late ovatis, 

 basi cordatis, apice obtusis, margine integris. usque ad 11 cm. longis, 

 13 cm. latis, supra viridibus parum .stellato-pubescentibus, subtus dense 

 incano stellato-pubescentibus, basi 5-nerviis. simul pinnato-venosis ; 

 petiolis ca. 7.5 cm. longis: racemis terminalibus monoicis ; florum 

 masculorum staminibus ca. 15, filamentis glabris, receptaculo pubes- 

 eenti. calycis lobis ovatis acutis 5, extus incano-stellatis, intus glabris, 

 petalis oblongis calycem aequantibus : floribus femineis apetalis, caly- 

 cibus alte lobatis, lobis spathulatis dense pubescentibus ; stylis usque 

 ad basim semel partitis, ramis stellato-barbatis : capsula quam calyce 

 paululum longiori, extus stellato-pubescenti ; seminibus glabris. 



A very robust species bearing large white leaves and short racemes 

 of crowded flowers. Collected near San Geronimo, Oaxaca. No. 7146. 

 Type, Herb. Univ. Calif. No. 173390. 



