240 D A T I S C E ^. 



to the ovary, 4— 8-homed ; the lobes yellowish within. Stamens several. 

 Styles 3 — 8 ; ovary 3 — 8-celled. Fruit osseous, nut-like, indehiscent, 

 3 — 8-celled, the cells 1-seeded. 



1. T. expaiisa, Murr. Oomm. Gcetting. vi. 13. t. 5 (1783). Leaves 

 petiolate, rhombic-ovate, acute or acuminate, entire, more or less crystal- 

 line-papillose, 1 — 2 in. long : fl. sessile, 1—3 in each axil : fr. 4-horned, 

 about ^3 in. long, scarcely as broad. — Common along the beaches of San 

 Francisco Bay, both in Marin and Alameda counties ; perhaps even more 

 widely dispersed on this coast, where it is apparently native. 



Ordeb XXXVIII. D A T I S C E /€ . 



Robert Brown, in Denham's Travels 25 (1826). 



With us represented by a species of 



DATISCA, Liniuc'us. Stout glabrous dioecious perennials. Leaves 

 laciniate-piuuatifid ; the segments coarsely toothed. Flowers axillary, 

 subsessile, fascicled. Calyx of sterile fl. very short, with 4 — 9 unequal 

 lobes. Stamens 10 — 25 ; filaments short. Calyx of pistillate fl. with ovoid 

 tube somewhat 3-angled, 3-toothed, the stamens when present 3, alternate 

 with the teeth. Styles 3, bifid, opposite the teeth, the linear lobes stig- 

 matic on the inner side. Capsule oblong, coriaceous, 1-celled, opening 

 at apex between the styles. Seeds oo , small, in several rows on the 3 

 parietal placentae ; embryo cylindrical, in the axis of small albumen. 



D. g-lonierata, B. & W. Bot. Calif, i. 242 (1876) ; Presl. Eel. Hsenk. ii. 

 88. t. 64 (1835), under Tricerastes. Erect, 3 — 6 ft. high, simply or sparingly 

 branching : leaves of ovate or lanceolate outline, acuminate, 6 in. long ; 

 the floral shorter : fl. 4 — 7 in each axil of the long leafy raceme, the 

 fertile mostly perfect : anthers subsessile, 2 lines long, yellow : styles 

 exceeding the ovary : capsule oblong-ovate, 3 — 4 lines long, slightly 

 narrowed toward the truncate triangular 3-toothed summit. — Very com- 

 mon along mountain streams from Lake and Amador counties southward. 



Okder XXXIX. C I S T 1 D E /E . 



Ventenat, Tableau du Reg. Veget. iii. 219 (1799). Oistine^e, DC. 

 Prodr. i. 263 (1824). Oisti, Juss. (1789). 



In Asia an extensive family, of which we have one species. 



HELIANTHEMUM, Valerius Cordus. Low, branching, suflFrutescent. 

 Leaves alternate, simple, entire. Flowers perfect, regular. Sepals 

 mostly 5, unequal, persistent. Petals 5, yellow, fugacious. Stamens oo , 



