370 PENNELL: THE SPECIES OF KNEIFFIA 
9. Kneiffia velutina Pennell, sp. nov. 
Stem 2-4 dm. tall, pubescent. Leaves 2-4 cm. long, narrowly 
or broadly lanceolate, acute to acutish, densely soft-pubescent. 
Inflorescence less than one fourth height of plant. Bracts little 
exceeding, the upper shorter than the capsules. Hypanthium 
9-12 mm. long. Sepals 10 mm. long, somewhat attenuate, so 
that buds are slightly caudate. Petals triangular, 15-20 mm. 
long. Filaments about one half length of petals. Anthers pale 
yellow. Stigmas about one third length of style. Capsule-body 
oblong, slightly clavate, 7-9 mm. long; the wings almost equaling 
width of body; pubescent with incurved hairs and, especially 
proximally, with some finer gland-tipped hairs. 
Type, dry sandy soil, Garden City, Long Island, New York, 
collected in flower June 23, 1902, F. A. Mulford; in the herbarium 
of the New York Botanical Garden. 
Dry sandy soil, apparently restricted to the Hempstead Plains 
of western Long Island, from which numerous collections have 
been seen. 
10. Kneiffia tetragona (Roth) Pennell, comb. nov. 
Oenothera tetragona Roth, Catalecta 2: 39. 1800. A garden 
plant, for which an American origin is stated. No specimen 
seen but the full description would apply to the plant here 
considered. 
Oenothera fruticosa ambigua Nutt. Gen. N. Amer. Pl. 1: 247. 
1818. ‘Has. Common around Philadelphia.” 
Oenothera incana Nutt. l. c. 247. 1818. ‘“‘Has. In dry woods, 
Maryland.—Dr. W. C. Barton, v. s. in Herb. Barton.” 
Oenothera pilosella Raf. Ann. Nat. 15. 1820. ‘Indiana, near 
Evansville.”’ 
(?) Oenothera canadensis Goldie, Edinb. Phil. Jour. 6: 325. 1822. 
“Island of Montreal.’’ The size of flowers would indicate 
that this plant must be K. tetragona. ‘ Apparently far out of 
the normal range of the species (see Macoun, Cat. Canad. PI. 1: 
172. 1883). 
Oenothera ambigua Spreng: Syst. 2: 229. 1825. 
Oenothera serotina Sweet, Brit. Fl. Gard. 2: pl. 184. 1826. 
A garden plant, of which no specimen seen. 
Kneifia suffruticosa Spach, Hist. Veg. 4: 374. 1835. ‘‘Croit 
dans les Etats Unis, depuis la Géorgie jusqu’ au Canada.” 
