364 PROCEEDINGS OF THE AMERICAN ACADEMY 



M. S. Bebb ia Illinois. The foliage is intermediate between the two 

 foregoing species ; the seeds are quite peculiar. 



4. E. Californica. This American repi'esentative of E. Hydro- 

 piper has been collected only by Mr. J. G. Lemmon, in Sierra Valley, 

 on the Sierra Nevada, alt. 5000 feet, and was received in 1877. The 

 seeds are just those of the European species referred to; the leaves 

 broader and shorter-petioled ; the pedicels all shorter than the calyx ; 

 the upper or younger flowers nearly sessile. These are evidently 

 expanded in anthesis, are white, and not longer than the sepals. 



2. Two JSi'ew Genera of Acanthacece. 



CARLOWRIGIITIA, nov. gen. Tr. Justiciearum. 



Calyx alte divisus; segmentis angustis aequalibus. Corolla limbo 4- 

 partito rotato, tubo tenui 2-3-plo longiore, fauce hand ampliato : lobi 

 oblongi, consimiles, patentissimi, plani, vel posticus (a^stivatione inti- 

 mus) primura concavus minus patens. Stamina 2, fauci inserta : fila- 

 menta filiformia, corollte lobis asquilonga : antherae biloculares, loculis 

 parallelis contiguis muticis. Staminodia nulla. Stylus filiformis : 

 stigma cupitellatum vel emarginatum. Ovarium loculis biovulatis. 

 Capsula ovata, acuminata, obcompressa, longe clavato-stipitata. Semina 

 plana, scabrida. — Fruticuli Texano-Arizonici, ramosissimi, glabelli ; 

 ramulis gracilibus ; foliis parvis angustis integerrimis, bracteis bracteo- 

 lisque consimilibus ; floribus sparsis ; corolla roseo-purpurea. 



C. LiNEARiFOLiA. Pedalis, ericoideo-foliosa ; foliis angiistissime 

 linearibus ; floribus paniculato-racemosis ; sepalis fere discretis bracteis 

 foliisque similibus ; corollas lobis tubo duplo longioribus ; filamentis 

 puberulo-liirtellis ; antheris sagittatis, loculis basi obtusissimis ; stipite 

 capsulce ajquilongo. — Shaueria linearifolia, Torr. Bot. Mex. Bound. 

 123. Dianther(B sp. Benth. & Hook. Gen. ii. 1114. — S. W. Texas, 

 C. Wriglit, Bigelow, Pai-ry. 



C. Arizonica. Humilis, diffusa; foliis oblongis lanceolatis (lin. 

 2-3 longis) ; floribus in ramulis filiformibus nudis sparsis sessilibus ; 

 bracteis subulatis calyce o-fido brevioribus; bracteolis fere nullis; corol- 

 las lobis tubo 3-plo longioribus, 3 angusto-oblongis, postico sursum 

 latiore basi attenuato facie macula lutea ; filamentis glabris ; antheris 

 oblongis ; stipite capsula breviore. — Arizona, on rocks near Camp 

 Grant, Dr.. Palmer, coll. 18G7. 



These two little shrubs appear to form a well-marked genus, cer- 

 tainly different from Dianthera as well as from Schaueria. Kotvvith- 



