32 Rhodora [FEBRUARY 
specimens of P. dumetorum and P. cristatum have failed to show other 
differences than the slight and inconstant toothing of the wings of the 
fruiting calyx. 
ACNIDA TUBERCULATA Moq., var. prostrata (Uline & Bray), n. 
comb. 4. tamariscina, var. prostrata Uline & Bray, Bot. Gaz. xx. 
158 (1895). 
AMARANTHUS HYBRIDUS L., var. hypochondriacus (L.), n. comb. 4. 
hypochondriacus L. Spec. Pl. 991 (1753). 
CARYA GLABRA (Mill.) Spach, var. villosa (Sarg.), n. comb. | H icoria 
glabra, var. villosa Sarg. Silv. vii. 167 (1895). Н. villosa Ashe, Bull. 
Torr. Bot. Club, xxiv. 481 (1897). 
ASARUM CANADENSE L., var. reflexum (Bicknell), n. comb. А. 
reflecum Bicknell, Bull. Torr. Bot. Club, xxiv. 531, 533, t. 317 (1897). 
— Repeated efforts to find constant distinctions between А. canadense 
and the sometimes well marked A. reflexum have failed, and it appears 
that the latter plant is more naturally classed as a variety of the former. 
RADICULA OBTUSA (Nutt.) Greene, var. sphaerocarpum (Gray), n. 
comb. Nasturtium sphaerocarpum Gray, Mem. Am. Acad. iv. 6 (1849). 
Roripa sphaerocarpa Britton, Mem. Torr. Bot. Club, v. 170 (1894). 
— In taking up the old generic name Radicula for the genus which has 
long passed as Nasturtium, the writer merely follows the course ren- 
dered necessary by the Vienna Rules. It is one of several cases, 
happily rather few, where from apparent oversight the list of nomina 
conservanda was not made sufficiently complete to guard against awk- 
ward change. 
RADICULA PALUSTRIS Moench, var. hispida (Desv.), n. comb. 
Brachylobus hispidus Desv. Journ. Bot. iii. 183 (1814). Nasturtium 
hispidum DC. Syst. Veg. ii. 201 (1821). NN. palustre, var. hispidum 
Gray, Man. ed. 2, 30 (1856). Roripa hispida Britton, Mem. Torr. 
Bot. Club, v. 169 (1894). 
Radicula aquatica (Eaton), n. comb. Cochlearia aquatica Eaton, 
Man. ed. 5, 181 (1829). Roripa americana Britton, Mem. Torr. Bot. 
Club, v. 169 (1894). Nasturtium lacustre Gray, Gen. Ill. i. 132 (1848). 
Radicula Armoracia (L.), n. comb. Cochlearia Armoracia L. Spec. 
Pl. 648 (1753). Nasturtium Armoracia Fries, Fl. Scan. 65 (1835). 
Roripa Armoracia Hitche. Spring Fl. Manhattan, 18 (1894). 
PHYSOCARPUS oPULIFOLIUS (L.) Maxim., var. intermedius (Ryd- 
berg), n. comb.  Opulaster intermedius Rydberg, apud Britton, Man. 
492 (1901). 
