398 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
SPECIMENS EXAMINED: Lake Washington, Suksdorf 971; Seattle, Smith 100; Piper 1049, 
July, 1895. 
This was included in Suksdorf’s list as L. album H. B. K. The species has long been 
established and appears native. 
AMMANNIA. 
1. Ammannia coccinea Rottb. Pl. Hort. Havn. Deser. 7. 1773. 
Ammannia latifolia Torr. & Gr. FI, 1: 480. 1840. 
Type Locatity: Not ascertained. 
Rance: Washington to Indiana and Florida. Central and South America. 
SPECIMENS EXAMINED: West Klickitat County, Suksdorf 1720. 
ROTALA. 
1. Rotala ramosior (L.) Koehne; Mart. FI. Bras. 137: 194. 1874. 
Ammannia ramosior L. Sp. Pl. 1: 120, 1753. 
Ammannia humilis Michx. Fl. 1: 99. 1803. 
TYPE LOCALITY: Virginia. . 
Rance: Washington to Massachusetts, southward to Central and South America. 
SPECIMENS EXAMINED: Lake Chelan, Lake & Hull, August, 1892; Spokane County, Suks- 
dorf 303; Spokane, Piper 2644; Almota, Piper, September, 1897. 
ZONAL DisTRIBUTION: Arid Transition and Upper Sonoran. 
ONAGRACEAE. Eventxnc Primroskt FAMILY. 
Parts of the flower in twos; fruit indehiscent......----------- CircAFA (p. 399). 
Parts of flower in fours. 
Fruit few-seeded, nut-like; leaves altermate......-.-.----- Gaura (p. 399). 
Fruit many-seeded. 
Calyx limb divided to the ovary, persistent, petals 
minute or wanting... ......--------------------- IsNARDIA (p. 399). 
Calyx limb deciduous; petals conspicuous. 
Seeds comose; lower leaves mostly opposite... .. EPILopiuM (p. 399). 
Seeds naked, not comose; leaves all alternate. 
Anthers versatile. . 
Stamens of equal length. 
Stigmas deeply 4-cleft, the lobes 
linear. 
Ovules in 1 row; flowers yellow. OENOTHERA (p. 407). 
Ovules in 2 rows; flowers pink. AnoGra (p. 407). 
Stigmas entire or nearly so. 
Calyx-tube longer than the 
ovary, flowers large......... Taraxta (p. 405). 
Calyx-tube shorter than the 
ovary; flowers small... ~~ -- - SPHAEROSTIGMA (p. 405). 
Stamens of unequal length, the outer 
ones longest. 
Annuals; small-flowered; caulescent. GayorHyTuM (p. 407). 
Biennials; large-flowered, acaules- 
cent. 
Capsule 4-angled; seeds grooved 
on one side......----.------ PacuyLopuus (p. 408). 
Capsule 4-winged; seeds not 
grooved .......-.---------- Lavauxta (p. 409). 
