OF ARTS AND SCIENCES. 77 



fauce obconico lobis obovatis integerrimis vel erosulis apice saepius cus- 

 pidalis 2-4-plo breviore ; antheris oblongis ; capsula ovali-oblonga 

 polysperma ; semiiiibus angulatis fere cubicis, tegumento externo laxo 

 temii uec spirillifero nee mucilaginoso. — San Bernardino Co., S. E. 

 California, on desert plains near the head of the Mohave River, Parry 

 and Lemmon, also Palmer. A very distinct and pretty little species, 

 in appearance somewhat intermediate between G. dianthoides and a 



nense, Jacq. Ic. Rar. t. 342. This from the character should he WaUer's Vince- 

 toxiciim acaidliocarpos, Elliott's G. Carolinensis (excluding the fruit), and probahly 

 (t. kii-suins, Sweet, Brit. Fl. Gard. t. 1. It extends from South Carolina to 

 Louisiana and Arkansas. 



G. Baldwixianus, Sweet. Corolla albida vel flavida, lobis oblongis demum 

 subspathulatis tenuioribiis : corona fere membranacea altius fissa, segnientis 5 latis 

 ssepius eniarginatis, 10 per paria interjectis lineari-subulatis duplo longioribus 

 stigma superantibus. — G. »«(;c;o/</(////((s, Ell., non Michx. G. Carolinensis, 'Nutt 

 Gen. i. ItJo, non R. Br. G. Iiirsutiis, Lodd. Cab. t. 305 ? Georgia and Alabama 

 to N. W. Arkansas. Elliott and Nuttall, who describe from dried specimens, speak 

 of the corolla as " obscure yellow " or " yellowish," but Engelmann, who col- 

 lected it in Arkansas, says " wliitisii " ; and Buckley on tlie ticket of his speci- 

 mens in the Torrey herbarium, collected in Alabama, writes "flowers white." 

 This species clearly coimects Poli/stenuiia, Decaisne, with Emjoiiolohus. 



* * Flores solitarii subsessiles : antiiera9 etiam Chtliamnlice, sed corona simplex 



Eugonolubi. 



G. SAGiTTiFOLTus. Plumilis, volubilis, vix puberula; foliis subcarnosis 

 parvis sagittatis, auriculis obtusis : corolla lutea glabra alte 5-tiila, lobis lanceo- 

 lato-linearibus : corona imae basi corollae inserta cyathiforma integerrima; foUi- 

 culis lanceolatis lajvihus. — Rio Limpio, W. Texas, Wright. This is Dr. Torrey's 

 G. parvifolius only as respects the specimen of Wright referred to by him, and 

 from which he describeil the follicle. 



§ 3. Chthamai.ia. (ClithnmaUa & Lachnostomatis sytec. Decaisne.) Corolla 

 baud reticulata, campanulata vel rotata, 5 loba vel 5-partita: corona intus 

 cristata vel append iculata, raro (appendici>)us liberis) duplex : antherae 

 prominiilaj a stigmate niagis liberae, marginibus nunc (Asclepiadis modo) alls 

 corneis instructaj. Plantse humiliores saepius parviflores. 



* Diffusae, nee volubiles : pedunculi nuUi : pedicelli 2-3 ad axillas fasciculati : 

 folia cordata. 



G. PUBIFLORC9, Engclm. PI. Lindh. i. 44; Torr. Mex. Bound. 165. G. 

 prostratus, Baldw. in Ell., non R. Br. Chthatiuilia /nihifloni, Decaisne. — The 

 only species of this section east of the Mississippi, and an ambiguous one. It 

 has exactly the aspect of the two following, except that the campanulate corolla 

 is cleft barely to the middle (in which it is very unlike true Gonolohi), but the 

 cup-shaped crown, which overtops the stigma, is almost simple within, the five 

 crests being attenuated and inconspicuous or even obsolete : there are five 

 minute adnate auricles at the very base. The follicle, which I have not seen. 

 is said to be smooth. 



