BICKNELL: FERNS AND FLOWERING PLANTS OF NANTUCKET 79 
specimens from both places were used by Doctor MacDougal in 
his ‘‘ Mutation Studies,” 1904. 
* Oenothera stenopetala sp. nov. 
Dwarf, 1-4 dm. high, erect, often geniculate at base, simple or 
sparingly branched, the branches ascending, often surpassing the 
main stem; root woody, slender and elongated, mostly simple or 
nearly so; stem pale brown, sometimes slightly reddened below 
when old, lignescent and terete below, the bark early splitting 
and exfoliating in thin strips; above, and the branches, somewhat 
angled decurrently from the insertions of the leaves, closely ap- 
pressed canescent-puberulent, sometimes thinly short strigillose 
above. Leaves often erectly ascending, pale green, narrowly 
oblong to linear-oblanceolate, 4-7 cm. long, 5-10 mm. wide, 
acute or subacute, the lower tapering into slender petioles, the 
uppermost and the bracts sessile with tapering base, or, even the 
bracts also, sometimes short petioled, entire or obscurely repand 
denticulate, on both surfaces finely white pubescent with appressed 
hairs; flower buds densely appressed strigillose and downy puberu- 
lent with gland tipped hairs; hypanthium very slender, 2-3 cm. 
long, glandular-puberulent; sepals 7-12 mm. long, glandular- 
puberulent and subpilose, the apical process subterminal, about 2 
mm. long; petals narrowly linear, pale yellow, spreading, at length 
reflexed, puberulent on the outer surface and often slightly so 
within, 10-22 mm. long, 1.5-3 mm. wide; stamens longer than 
the style; filaments becoming 10 mm. long, anthers 3-4.5 mm. 
ong; capsule tapering from the base or from above the middle 
to a narrowed apex, quadrangular with rounded angles, 2.5-3.2 
cm. long, 5-7.mm. wide, when young whitened with a dense 
appressed subsericeous pubescence becoming appressed pubescent 
and slightly strigillose. 
Type Aug. 15, 1906, in Herbarium New York Botanical Garden. 
Found only along the sandy embankments of the railroad 
beyond the Orange Street crossing, where’ it was common in 1906 
and 1907. In full flower and with some immature pods Aug. 5, 
1906; still in flower, and with full sized pods Aug.'15; a, few last 
flowers Sept. 11, 1907. On June 19, 1908, the larger plants were 
3-4 inches high. 
It is interesting to find that this plant was collected on Nan- 
tucket by Morong as long ago as Aug. 31, 1871, as evidenced by 
a flowering specimen in the Herbarium of the New York Botanical 
Garden labeled by Mr. Morong’s hand “‘Oenothera biennis var. 
