192 
the stamens; capsules nearly filiform, about 1.5 cm. long, villous, — 
spirally twisted near the base, slightly glandular; seeds oblong, 
13 mm. long, pale, very minutely striate. 
A species of low habit, related to S. gauraeflorum, S. Boothii and 
S. refractum, striking on account of its dense villous pubescence. 
Specimens were collected on May 3, 1850, by Capt. Stansbury, 
at ‘Great Salt Lake, growing in loose sand on the ‘storm line’ of 
the shore,” and by M. E. Jones, in June, 1880; these were dis- 
tributed as OEnothera Boothtt Doug). 
16, SPHAEROSTIGMA REFRACTUM (S. Wats.). 
OEnothera refracta S. Wats. Proc. Am. Acad. 17: 373. 1882. 
Southern Utah and northern Arizona. 
17. SPHAEROSTIGMA ALyssoipEs (H. & A.) Walp. 
Oknothera alyssoides H. & A. Bot. Beech. Voy. 340. 1840. 
Sphaerostigma alyssoides Walp. Repert. 2: 78. 1843. 
Idaho and Oregon, south to Nevada, Utah and southern Cali- 
fornia; at 1100 meters in Nevada and California. 
17a. SPHAEROSTIGMA ALYSSOIDES MINUTIFLORUM (S. Wats.). 
OEnothera alyssoides var. minutiflora S. Wats. Proc. Am. Acad. 
8: 591. 1873. 
Northern Nevada and Utah. 
17b. SPHAEROSTIGMA ALYSSOIDES MACROPHYLLA. 
OEnothera alyssoides var. villosa S. Wats. Proc. Am. Acad. 8: 
591. 1873. Not O£. villosa Thunb. 1794-1800. 
Nevada and Utah. 
OLEnothera rutila Davidson, is said to belong to the genus 
SPHAEROSTIGMA, but I have not seen specimens. 
15. CHYLISMA Nutt.; Raimann in Engl. & Prantl, Nat. Pfl- 
Fam. 3: Abt. 7, 217, 1803. 
Flowers axillary, subtended by leaves, . I. C. plerosperma. 
Flowers in terminal racemes, usually subtended by bracts. 
Plants caulescent. 
Leaves simple, 
Leaves cordate ; capsules short-pedicelled, 2, C. cardiophylla. 
Leaves narrowed at the base; capsules long-pedi- 
celled. 
