^5G JOURNAL OF THE ARNOLD ARBORETUM [vol. i 



HA^LVMELIDACEAE 



Parroticpsis Jacquemontiana, comb. nov. — Folhcrgllla inrolucrata 



Falconer lu IVoc. Linn. Soc. i. 18 (18;i9), sine descriplione, in Koylc, 111. 



Bot. Ilinial. inlrod. xxv. (ISIJO), sine dcscriplioue. — Niedenzu in Enj^'ler 



& Prantl. Nat. rdanzenifain. in. 2a, U2() (1891). — 7\/m>/m Jacqne- 



viontiana Dccaisne in Jac(iueinont, Voy. vi. 7J?, t. 8^2 (18 It). - Brandis, For. 



Fl. 21fi, t. 28 (1874). — Clarke in Hooker f., Fl. Brit. Ind ii. 42G (187!)). — 



Hooker f. in l^ol. Mag. cxxii. t. 7501 (1890). — rarroUoims involucrala 



Schneider, 111. Ilandh. Laul^liolzk. i. 429, fig. 274li 1, 27,3b (1905). —Baas 



Beckinja: in Mevl(^deel. Landbouwlioogescli, Wageningen, xiv. 104, t. 3 

 (1918). 



rarwftop.sis first proi)osed as a subgenus of Folhcnjilla by Xi(\lenza 

 in 1891 (1. c.) is probably l»esl regarded Avitli Schneider as a distin(i genus, 

 as it differs in its floral character as well from Fothergilla as from Parrot ia, 

 though it is ai)parently nearer to llic former from wliicli it differs only in 

 the ca])]tate innoreseence sui)porled at tlic base l>y large bracts, in the less 

 numerous stamens with linear not club-shaped filanu^nts, while from Par- 

 rotia it is <h*slinguished by Llie upright more munerous stamens Avith sub- 

 quadrangidar yc^llow anthers opening laterally by two longitudinal valves 

 and ]ty the s'ellate i)ul)escence. The specific nan^e, however, accepted by 

 Schneider cannot stand, as the name F, involucrala is in neitlier one of the 

 two places cited above accomi^anied by a description. 



Hamamelis vernalis Sargent f. tomentella, forma nov. 



A typo recedit foliis subtus praesertim ad nervos dense tomentellis vel 



su])tomentosis, pilis fascicidatis e pilis villosis 0.5-1 mm. longis com])Ositis. 



Oki.ahoma. Le Flore County: Polcau, July 12, E. J. Palmer 



(No. 82(50, tyjHO, near Page, September 9, 1913, G. iV. Sfarn^^ (No. 2610). 



MLSsorui. Monteer, October 25, 1908, /?. F. Bu,sh (Xo. 5344). 



Tlie same form has api>eare;l among plants iulrorluced from Swan, 

 IVTissouri, and is growing nt)w at the Arhoretum. Like the type tins form 

 vanes in tlie color of the under side of the leaves from green to iilaucous. 



ROSACEAE 



Physocarpus auslralis, comb. nov. — ? Spiraea caroJiniana Marshall, 

 Arbiist. 140 (1785), nomen. — Opulastcr auslralis Rydberg in X^. Am. Fl. 

 XXII. 242 (1908). 



Virginia to South Carolina. 





'f 



wicz by the stellaie-toirientose rece})tacle and sei)als, l>y the sliorler, abruptly 

 pointed follicles and l]\e smaller and broader leaves. 



Physocarpus stellatuSj cond). nov. — Spiraea opullfalia e. Jerniginea 

 Xuttall apud Torrey & Gray, Fl. X. Am. i. 414 (ISIO).— Nc'dUa opuli^ 

 Julia var. fernajhiea S. Watson, Bibl. Ind. I. 290 (1878).^ — Opuhusfer 

 sfellatiis Rydberg in Snudl, Fl. Southeast, St. 513 (1903); in X. Am. Fl. 



