OF ARTS AND SCIENCES. 63 



long ago marked out Steironema as a subgenus ; but this new particu- 

 lar warrants the complete se{)aration. 



The species are not easy to define, as they incline to run into each 

 other. But they are on the whole tolerably well distinguished in the 

 later editions of the Manual of the Botany of the N. United States. 

 iliey ace : — 



S. ciLiATUM. (S. ciliata, Raf. 1. c.) 



S. RADiCANS. Lysimachia radicans, Hook. Companion to Bot. 

 Mag. i. 177. 



S. LANCEOLATUM. {S. heleropliylla, Raf. & S. Jlorida, Baudo, 

 mainly.) Lysimachia Ifinceolata, Walt. Var. hybrid um, tlie L. hy- 

 brida, Michx. Var. angustifolium, the L. angustifuUa, Lam., and 

 L. heterupliylla, Michx. 



S. LONGIFOLIOM. (^S. longifuUa'^ & S. revoluta, Raf.) The oldest 

 specific name is Lysimachia quadrijlora, Sims, Bot. Mag. t. G60, but 

 that name is an inappropriate and deceptive one. L. longifoUa^ Pursh, 

 is only a little later, and is unobjectionable. 



FuAXiNUS Gkeggii. Onuis: fruticosa, glabra ; ramis gracilibus 

 teretibus ; foliolis 3-7 angusto-spathulatis seu oblongo-obovatis obtusis 

 obtuse paucidentatis vel integerrimis planis coriapeis fere aveniis sessili- 

 bus parvis, petiolo inter foliola alato-marginato ; samara oblongo-lineari 

 apice retusa stylo brevissimo apiculata. — F. Schiedeana vav. parviJoHa, 

 Torr. Bot. Mex. Bound. 16G. — S. W. Texas, and adjacent parts of 

 Mexico, Gregg, Schott, Bigelow, Parry. 



FoRESTiERA Neo-Mexicana. F. acuminatcB proxima; foliis rai- 

 noribus (pollicaribus) spathulato-oblongis apice obtusis vel obtuse 

 subacuminatis brevi-petiolatis ; floribus foemineis fasciculatis (baud 

 paniculatis) ; calyce minuto subpersistente ; drupis brevi-oblongis vel 

 ovoideis obtusis. — F. acuminala var. parvifolia, Gray, Proc. Am. 

 Acad. iv. 364:. — New Mexico, Fendler, C. Wright, Palmer, Brandegee. 



holds well, the anomalous case of Steironema excepted, yet with somewhat of 

 the gradations which are almost everywiiere apt to occur between these two 

 modes. On tiie one iiand some PrimuJie (notably P. Boveana) will occasionally 

 have three of the lobes in the "contorted" fashion, and only two wholly cov- 

 ered ; on the other, species of Li/simachlu, such as L. clethroides, not rarely 

 present flowers with one lobe wholly exterior and one wholly interior. By 

 suppressing the tribe Li/siinachiece, C/jclauien and Dodecalheon are brought into 

 juxtaposition, and the four tribes are made to rest on stable cliaracters, — Hot- 

 toniece on the anatropous ovules, Corklece on tlie irregular flowers, and SamoletB 

 on the adnation of the base of calyx and ovary. 



The authors of the Genera Plantarum have overlooked the heterogone 

 dimorphism of the flowers of Hottonia. 



