326 ONAGEACE^. 



alternate. Flowers yellow, solitary in the axils, pediceled. Calyx- 

 tube elongated, not produced beyond the ovary, its lobes 5. Petals 

 5. Stamens twice as many. Fruit (in ours) 5-celled. Seeds very 

 numerous. (Bernard de Jussieu, who founded the natural system of 

 classification.) 



1. J. Californica. Califoknia Watbr-weed. Stems IJ to 6 

 ft. long; leaves of floating plants orbicular to elliptic, nearly 1 to IJ 

 in. long, on petioles almost as long; leaves of erect plants of muddy 

 shores broadly oblong, acute at base and apex, or obovate, 1 to 2 in. 

 long, the petioles J in. long; calyx-lobes lanceolate, J in. long; petals 

 broadly obovate, 6 to 7 lines long; fruit woody, cylindric, 10 lines 

 long, indehiscent, at length reflexed and the calyx-segments decidu- 

 ous from the mature fruit; fruiting pedicel J to f in. long; seeds large 

 for the order, with a very thick tough outer coat; cotyledons elliptic, 

 caulicle very short. 



Kegion of the Lower Sacramento and the Lower San Joaquin, par- 

 ticularly in tide sloughs; Cache Creek, Bolander; Clear Lake, Jepson; 

 Warm Springs, Alameda Co.; lakelet near Aptos, Santa Cruz 

 Co., SetcheU; Pajaro, Monterey Co., Chandler; Visalia; Bakersfield. 

 July-Sept. 



2. LUDWIGIA L. False Loose-stkiee. 



Aquatic or marsh perennial herbs, with the aspect of the preceding, 

 but the leaves opposite, parts of the flower in 4's, and the petals often 

 absent. Stamens as many as the petals and alternate with them. 

 Ovary broad at apex and usually flattened, or crowned with a conical 

 style-base. Capsule 4-celled, dehiscent by lateral slits or terminal 

 pores. Seeds minute. (C. G. Ludwig, 1709-1773, Professor of Botany 

 at Leipsic.) 



1. L. palustris Bll. Water Purslane, Glabrous, stem 6 to 

 12 in. long; leaves obovate, acute or acuminate, narrowed at base into 

 a rather long petiole, the whole leaf 8 to 12 lines long; petals none, 

 or minute and reddish; capsule erect, broadly oblong, IJ lines long, 

 more or less 4-sided or -angled, with a narrow longitudinal band of 

 tubercles on each side. 



Muddy shores: Healdsburg, Miss Kinr/: Clear Lake, Jepson. Aug. 

 Fr. Sept. Capsule yellowish, the persistent sepals green. 



3. ZAUSCHNERIA Presl. 



Low perennials, with alternate leaves (the lowest opposite) and 

 large scarlet Fuchsia-like flowers. Calyx above the ovary colored 

 like the- corolla, its tube funnelform with a globose base (nectar- 

 bearing within), and appendaged within at the most constricted por- 

 tion with several erect and deflexed scales. Petals scarlet, inserted 

 on the throat of the calyx and rather shorter than its erect lobes, 

 obcordate or 2-cleft. Stamens 8, exserted, colored like the corolla; 

 anthers linear-oblong, attached by the middle. Style long and 

 exserted, stigma 4-lobed. Capsule linear, obtusely 4-angled, 4-valved 

 and imperfectly 4-celled. Seeds oblong, with a tuft of hairs at the 



