1914] Bartlett,— Systematic Studies on Oenothera,— IV 35 
has been drawn up to cover only one variety; the other is described 
as Oe. venusta var. grisea. 
The typical form of Oe. venusta was grown from seeds collected by 
S. B. Parish at San Bernardino, California, Sept. 16, 1912. Var. 
grisea was collected by F. M. Reed (No. 358) at Riverside, Cal. 
The writer’s cultures of 30 plants of each were very uniform, and the 
forms are described after only one generation of cultivation. Cultures 
of both were also grown during the past summer by Prof. B. M. Davis, 
at Philadelphia. 
Oenothera franciscana sp. nov. Biennis. Rosula matura 4-5 dm. 
diametro, foliis anguste oblanceolatis, maximis modice bullatis, ca. 
25 cm. longis, 3.5—4 cm. latis, utrinque molliter pilis subappressis 
arcuatis tectis, apice acutis, basi in petiolum attenuatis, margine 
infra mediam distanter sinuato-dentatis, apicem versus solum denti- 
culatis, denticulis callosis. Planta matura 5-8 dm. alta, deorsum 
cum ramis 10-15 caule proprio fere aequilongis ex foliorum axillis 
rosulae prodeuntibus, sursum vel simplex et usque ad inflorescentiae 
basin solum ramulos brevis rosulatos ferens vel infra inflorescentiam 
ramosa. Rami infimi saepe ramosi. Caules teretes virides pilis 
triformibus vestiti; I, pilis 2-3 mm. longis patentibus verrucosis 
acutis basi rubrotuberculatis; I, alis similibus sed multo breviori- 
bus absque tuberculis rubris; IH, paucissimis laevibus minutis ampul- 
liformibus. Folia lanceolata, majora ca. 15 cm. longa, 3.3 cm. lata, 
utrinque molliter eum pilis acutis verrucosis pubescentia, brevipetio- 
lata, apice acuta, margine distanter sinuato-denticulata.  Inflores- 
centiae simplices laxae. Bracteae persistentes, inferiores foliis valde 
similes late divergentes vel deflexae, fructibus ascendentibus fere ter 
longiores; superiores basi obtusae vel rotundatae fructibus vix longi- 
ores, extus pilis aliis clavatis laevibus apice rotundatis viscidis, aliis 
longioribus acutis eis foliorum similibus sed non verrucosis tectae, 
intus solum his indutae. Hypanthium ca. 45 mm. longum, basi 2.3 
mm. crassum, superne modice dilatatum, pilis patentibus longis acutis 
sublaevibus vel inconspicue verrucosis cum aliis multo brevioribus 
laevibus clavatis intermixtis tectum. Calycis segmenta 38 mm. longa 
valde hirsuta, apicibus liberis 3.5 mm. longis terminalibus inter se 
appressis, ante explicationem gemmam basi 7-8 mm. diametro rubro- 
tinctam formantia; pilis biformibus, I, multis clavatis laevibus et II, 
longioribus patentibus acutis laevibus basi rubrotuberculatis. Petala, 
ca. 36 mm. longa obcordata. Stigmata patentia stamina longe ex- 
cedentia. Ovarium 11 mm. longum, dense pilosum, pilis aliis ascen- 
dentibus longitudine valde variantibus acutis verrucosis, aliis paucis- 
simis minutissimis clavatis. Fructus maturus saepe 4.4 em. longus 
sed plerumque multo brevior, quadrangulus prismaticus, 5-5.5 mm. 
crassus, apicibus valvulorum liberis (capsula dehisceta) erectis, 2.5 
mm. longis truncatis. Semina 1-1.5 mm. longa, atrobrunea.— Seed 
