- 264 BOTANICAL GAZETTE [OCTOBER 
the globose or subglobose pods of R. hispida. One is therefore 
driven to the conclusion that these are but variations of one species. 
In the present disturbed condition of nomenclature, one scarcely 
knows what generic designation to employ. However, if one 
ignores names prior to 1753, the order of the three names commonly 
employed seems to be Roripa Scop., Fl. Carn. 520. 1760; Radicula 
Dell. ex Moench, Meth. 262. 1794; Nasturtium R. Br. Ait., Hort. 
Kew. Ed. 2. 4:109. 1812. 
Following the same plan on the specific name it seems to result — 
as follows: 
Roripa terrestris (R. Br.), n. comb.—Nasturtium terrestre R. Br., 
l.c.; N. palustre DC., Syst. 2:191. 1821; Roripa palustris (L.) 
Bess., Enum. 27. 1821. 
RORIPA TERRESTRIS hispida, n. comb.—Brachylobus hispidus 
Desv., Journ. Bot. 3:183. 1814; Nasturtium hispidum DC., L.c.; 
Roripa palustris hispida Rybd., Contrib. U.S. Nat. Herb. 3:149. 
1895. 
RoRIPA TERRISTRIS globosa, n. var.—Tall and often declined, 
4-10 dm. high, perfectly glabrous; pods globose or subglobose, 
with a short necklike constriction between pod and receptacle. 
MACBRIDE 275 is typical; swampy land, Falk’s Store, Canyon Co., Idaho, 
June 22, 1910; also by AVEN Netson, Head of Wood’s Creek, Albany Co., 
Wyoming, August 1910. 
Spiraea idahoensis, n.sp.—A shrub, wholly glabrous throughout, 
10-18 dm. high, branched below; the current year’s branches 
erect, 3-5 dm. long and very leafy: bark of young branches very 
pale reddish brown: leaves large, ovate to elliptic or often oval, 
usually rounded-obtuse at both ends but sometimes subacute at 
apex, nearly regularly serrate often almost to the base, 5-9 cm. 
long: panicle large, more or less compound, cylindrical or pyramidal, 
' the lower branches of the panicle axillary to the uppermost some- 
what reduced leaves: calyx lobes reflexed, triangular-ovate, mostly 
acute, about as long as the disk: petals rose color, about 2 mm. 
long, twice as long as the calyx lobes, ovate, subacute or obtuse: 
filaments slender, more than twice as long as the petals: carpels 
ovate-oblong, smooth and polished, about o. 5 m. long. 
It is singular that this Idaho shrub should so long have passed for S. 
Wenziesii Hook. That species finds its typical development along streams and 
