OF ARTS AND SCIENCES. 343 



scription is principally di'awn, and which I take for a form of P. farvi- 

 Jlora. 



Phyllostegia brevidens (sp. nov.) : glabra; foliis ovalibus ai'gute 

 dentato-serratis ; racemo laxo brevi simplici, verticillastris multifloris ; 

 calyce quasi ti'uncato, dentibus brevissimis obtusis erectis ; corollas tubo 

 dorso pubescente calyce duplo longiore (seniipoUicari). — Hawaii, in the 

 forest of Mouna Kea, alt. 3,000 feet. Inflorescence as in P. grandijiora 

 (except in the smoothness), i. e. the pedicels sessile or nearly so; but 

 more numerous, from 7 to 11 in each cymule. 



Var. ? jS. AMBiGUA : calyce glaberrimo magis dentato, dentibus tubo 

 quadruplo triplove brevioribus ; corollte tubo calyce triplo longiore 

 (subpoUicari) ; foliis subtus nunc parce pilosis. — IVest Maui. This is 

 ambiguous between P. brevidens and P. grandijiora, having the corolla 

 about the size and shape of the latter, and most of the leaves are spar- 

 ingly pilose beneath. But the latter are sharply serrate, the calyces, 

 pedicels (about 5 in each cymule), &c. are perfectly glabrous, and the 

 calyx-teeth, although manifest and of the same form as those of P. 

 grandijiora, are much shorter and hardly spreading. There is reason 

 to suppose that this may be the same as a specimen which Menzies 

 collected on Maui, which is preserved in the herbarium of the British 

 Museum, and which Bentham referred to his P. Chamissonis. In 

 which case, if of a distinct species, as is likely, it should be named 

 P. Menziesii. 



Phyllostegia glabra (Benth.) : undique glaberrima; foliis ovatis 

 serratis basi rotundatis vel truncatis ; racemo laxo thyrsoideo, cymulis 

 plerisque pedunculatis trifloris ; lobis calycis parvulis breviter lan- 

 ceolatis tubo dimidio brevioribus, fructiferis vix ampliatis subpaten- 

 tibus ; corollte tubo calyce 2 - 3-plo longiore. Variat calycis lobis angus- 

 tioribus acutis, seu latioribus obtusis vel obtusiusculis, fructiferis baud 

 raro tubo lequilongis; corolla subpoUicari vel dimidio minore. — Gaudi- 

 chaud's plate of Prasium glahrum represents the largest-flowered form 

 of this species. Bentham's Phyllostegia glabra, in Bot. Reg. and in Lin- 

 naea, was described from branched specimens with smaller and proba- 

 bly later flowei's ; his P. Chamisso7iis, from a larger-flowered form. 

 The corolla varies much in size, but I have never seen it rival that of 

 P. grandijiora. I am persuaded, accordingly, that Bentham's P. 

 Macrm and P. Chamissonis must merge under the original name, 

 P. glabra. The species is the only one with pedunculate cymules, ex- 

 cept the following. 



