342 PROCEEDINGS OF THE AMERICAN ACADEMY 



bus ; genitalibus sublonge exsertis. — Sandwich Islands, on Mouna Ha- 

 leakala, East Maui, alt. 5,000 - 7,000 feet. A most striking and distinct 

 species : corolla an inch long, somewhat pubescent. 



PHYLLOSTEGIA, Benth. An examination of the now extant 

 materials of this Sandwichian genus leads to the suppression of four of 

 Bentham's species, and the establishment of as many new ones. Two 

 of the latter constitute a peculiar section, and P. Jloribunda may be 

 taken for another. The sections, and a key to tiie species, may be 

 presented as follows : — 



§ 1. Genuine. Racemi vcrticillastriflori, ncmpc verticillastri 6-20-flori in race- 

 mo caulem terminante dispositi, vel infiini (nunc lusu omnes) axillares. 

 CoroUiB albic. 

 Calycis lobi tubo ajquilongi foliacei, amplissirai : hirsutissima. P. vestita. 



Calycis lobi tubo pi. m. breviores : 



Fructiferi ampliati, explanato-patentcs, foliacei. Pedicelli ca- 



lycem seiicco-pubescentem suba^quantcs. P. grandijlora. 



Fructiferi baud explanato-patentes (P. racemosa forte exccpta). 

 Glabra : pedicelli gracilcs. 



Verticillastri pluriflori, baud pedunculati. P. brevidens. 



Verticillastri 6-fiori, cymulis s£epius pedunculatis ! P. cjlabra. 



Hirsutissima : pedicelli breves. P. hirsuta. 



Molliter pubescens scu villosa. 



Pedicelli graeiles calyce saipissime longiores : pili patcntes. P. parvljlora. 

 Pedicelli calycem cum corolla strigoso-pubescetitcm suba:- 



quantes. P. clavata. 



Pedicelli brevissimi plurimi. 



Calycis lobi subulato-lanceolati tubum subicquantes. P. staclujoides. 

 Calycis lobi ovati, obtusi, tubo breviores. P. racemosa. 



§ 2. Lateriflor-k. Racemi simpliciflori (pcdicellis solitariis), breves, ex axillis 



foliorum inferiorum. CoroUae violaceaj, parvae. 



Lobi calycis hirsutissimi, tubo requilongi, lineares. P. Jloribunda. 



§ 3. IL\rLOSTACHT^. Spica simplicidora terminalis, nuda. Corollae albas, tubo 



longo, lobis subaiqualibus crispis. Folia subtus cano-tomentosa. 



Folia basi sat cordata : calycis dentes angusti, acuti. P. haploslachja. 



Folia basi vix cordata: calyx repando-truncatus. P. truncata. 



Phtllostegia vestita, Benth. (racemo laxiore folioso,) takes in 

 P. dentata, Benth., racemo denso nudo, foliis floralibus plerisque calyces 

 fructif. baud superantibus. 



Phyllostegia grandiflora, Benth. To this, I suspect, belongs 

 Gaudichaud's Prasium macrophylhan also, but not Bentham's Phyllo- 

 stegia macrophylla, at least as to Macrae's plant, from which his de- 



