PENNELL: THE SPECIES OF KNEIFFIA 369 
6. KNEIFFIA RIPARIA (Nutt.) Small 
Oenothera riparia Nutt. Gen. N. Amer. Pl. 1: 247. 1818. ‘HAs. 
On the banks of Cape Fear river, Wilmington, North Carolina, 
in situations subject to inundation.” 
Kneifia riparia Small, Fl. SE. U. S. 842. 1903. ; 
Swamps along the Cape Fear River, near Wilmington, North 
Carolina. Little known, although recently re-collected by Dr. 
J. M. Macfarlane, C. S. Williamson, etc. Possibly not a distinct 
species. 
7. Kneiffia brevistipata Pennell, sp. nov. 
Stem 2-4 dm. tall, pubescent. Leaves 3-6 cm. long, linear- 
lanceolate, acutish, densely strigose-pubescent with ascending 
hairs, the young leaves very silky. Bracts slightly exceeding the 
capsules. Hypanthium 6-9 mm. long. Sepals 7-9 mm. long, 
acutish; tips not free in the bud. Petals triangular, 12-15 mm. 
long. Filaments about one half length of petals. Anthers 3-3.5 
mm. long, yellow. Stigmas less than one half length of style. 
Capsule-body clavate-oblong, 5-6 mm. long; wings raised beyond 
ridges; pubescent, becoming glabrate, especially distally; on a 
stipe less than its own length. 
Type, Poplarville, Mississippi, collected in flower and fruit, 
July 7, 1891, S. M. Tracy 1681; in the United States National 
Herbarium. 
Dry pine ridges, southern Alabama to eastern Louisiana. 
8. Kneiffia semiglandulosa Pennell, sp. nov. 
Stem 3-6 dm. tall, finely pubescent, becoming glandular above, 
purple-red. Leaves 5-9 cm. long, lanceolate-linear, acutish, 
finely pubescent with ascending hairs to glabrate. Bracts much 
exceeding the capsules. Hypanthium 10-20 mm. long. Sepa 
10-13 mm. long, acuminate; tips not or slightly free in the bud. 
Petals triangular, 15-25 mm. long. Filaments about one half 
length of petals. Anthers 5-6 mm. long, yellow. Stigmas less 
than one third length of style. Capsule-body clavate, 8-10 mm. 
long, Wings exceeding the prominent ridges; finely pubescent with 
Spreading gland-tipped, usually also with some incurved glandless, 
ae often glabrous or nearly so; on a stipe less than its own 
ngth, ; 
Type, Biloxi, Mississippi, collected in flower April 21, 1891, 
S. M. Tracy 5064, in the United States National Herbarium. 
Pine-land, West Florida to southern Mississippi; on ballast at 
Wilmington, North Carolina. 
