28 PITTOXIA. 



Diet. ed. 8 ; Marsh. Arb. 146 ; Nutt. Gen. i. 307 ; Darl. Cestr. 

 298 ; Beck, Bot. 98 ; Gray, Man. ed. i. 116 ; Seringe in DC. 

 Prodr. ii. 542 ; Physocarpa nparia, Eaf. New Fl, iii. 73 ; 



'7< 



Shnib 



4 to 10 feet liigb, with ckistered recurved surculoso stems : 

 leaves round-ovate in outline, 3-lobed, doubly crenate-serrate, 

 and, Avith the calyces and pedicels, glabrous or pubescent : 

 mature carpels 3, 4 or 5, connate below, | inch long, much 

 inflated, usually 2-seeded ; seeds broadly obovoid. 



From New England and Canada to Wisconsin, Kansas and 

 southward to Florida, but in the extreme southern localities 

 only in the var. ferruginea (Nutt.), Watson. The variety I 

 have not seen. From its special geographical range and 

 from the character assigned to the pubescence, I should 

 suspect it of meriting higher than varietal rank. The S. 



ifoli 



riparia, var. iomcntcUa, Kaf. 1. c, appears to be only the 

 common pubescent state of the species, scarcely deserving a 

 name as a variety. 



2. N. CAPiTATA(Pursh). Spircea capHaia, Pursh, FL 

 i. 342 (1814) ; Nutt. Gen. i. 307 (1818) ; Spreng. Syst. ii. 502 

 (1825) ; Seringe in DC. Prodr. ii. 542 (1825) ; Eaton, Man. 

 ed. 5. 408 (1829) : Physocarpa tomeufosa, Eaf. New Fl. iii. 

 74 (1836) ; P. oimlifolia or glahra, Eaf. 1. c. 73, in part : 

 Spircea ribifoUa, Nutt. in Torr. & Gray, Fl. i. 414 (1840); 

 S. opuVifolia, var. mollis, Torr. & Gray, 1. c. ; N. opnUfolia, 

 var. mollis. Brew. & Wats. Bot. Calif, i. 171 ; Macoun, Catal 

 Canad. 127 : Physocarpus opnUfolia, Coult. Eocky Mt. Bot. 

 78, in part. Shrub 8 to 25 feet high, the long surculiform 

 stems and branches recurved or tortuous and reclining among 

 the branches of trees : leaves 2 to 4 inches long, | a's broad, 

 3- veined, cleft at or below the middle into 3 lobes of which 

 the terminal is twice as large as the divergent laterals, the 

 whole margin with incised secondary lobes, these serrate- 

 toothed, more or less stellate-tomentose beneath, often 

 glabrate above : inflorescence usually corymbose, not rarely 



