1914] Bartlett, — Systematic Studies on Oenothera,— IV 33 
Macoun, Cat. Can. Pl. i. 294 (1884); Eastwood, Bot. Gaz. xxxiii. 
209 (1902); Farr. Contrib. Bot. Lab. Univ. Pa. iii. No. 1, 61 (1907). 
Mairania alpina (red-fruited form) Britton & Rydberg, Bull. N. Y. 
Bot. Gard. ii. 179 (1901); S. Brown, Alp. Fl. Can. Rocky Mts., 214 
(1907). Arctous alpinus [a], var. ruber [ra] Rehder & Wilson, Pl. 
Wils. pt. iii. 556 (1913).— Calcareous soils, Siberia and western 
China; in North America known from Alaska, Yukon, British Colum- 
bia, Alberta, Keewatin, and Quebec (Anticosti Island). For citation 
of stations see pages 21, 22, 24 and 25. 
Gray HERBARIUM. 
SYSTEMATIC STUDIES ON OENOTHERA,— IV. OE. FRAN- 
CISCANA AND OE. VENUSTA, SPP. NOVV. 
Harvey Harris BARTLETT. 
(Plates 107 and 108.) 
THE allies of Oenothera Hookeri form an especially difficult group 
from a systematic standpoint. In as much as they are open-pollinated 
forms and range throughout most of the far West from Oregon and 
Washington to Mexico, the chances are great that numerous spon- 
taneous hybrids exist. Although the writer has had a number of 
forms related to Oe. Hookeri in cultivation during the last three years, 
it has been very difficult to arrive at any conclusion in regard to speci- 
fic lines in the group. Aside from the more narrow-leaved forms one 
of which probably represents the true Oe. Hookeri T. & G., the cultures 
have included two very satisfactorily distinct new species, which can 
be safely characterized at this time. One of them, Oe. franciscana, 
has been cultivated by the writer through three generations. The 
seeds were taken from a packet accompanying a herbarium specimen 
which was collected July 30, 1905, at Carmel Beach, Monterey County, 
California, by Prof. C. P. Smith, of the Maryland Agricultural College, 
(C. P. Smith 1063, in herb. Bartlett.) They were planted in the open 
in the spring of 1910. Since the species is rather persistently biennial 
unless the seeds are started during the winter in the greenhouse, the 
plants failed to mature during the first season. One plant, however, 
bore in the axil of a rosette leaf, a single precocious flowering branch 
