PARSLEY FAMILY 615 



2. H. umbellata L. Sand Pennywort. Petioles and peduncles subequal, li/^ 

 to 4 (or 10) inches high, arising from slender creeping rootstocks with descending 

 branches bearing round tubers; leaves peltate, the blades orbicular, crenate, 4 to 

 7 (or 14) lines broad; umbels many-flowered, simple (rarely slightly proliferous) ; 

 bracts of involucre short, ovate; pedicels 1% to 6 lines long; fruit Y4 to 1 line long, 

 strongly notched at base and apex; dorsal rib prominent but obtuse. 



Wet often sandy bottoms, 5 to 4000 feet : Southern California. East to the 

 Atlantic, south to Mexico. Apr., fr. June. 



Locs. — Los Angeles River, Braunion 533 ; Buena Park, Orange Co., C. W. Hamlin ; Riverside, 

 Jepson 1583a; San Bernardino, Parish; Lytle Creek, e. San Gabriel Mts., Peirson 2141; Rancho 

 Verde, sw. Mohave Desert, Parish 9704; Covington ranch, Conchilla Range, Munz 5283. 



Refs. — Hydrocotyle umbellata L. Sp. PI. 234 (1753), tvpe from North America; Jepson 

 Man. 705 (1925). 



3. H. verticillata Thunb. Spike Pennywort. Similar in habit to no. 2; 

 umbels forming an interrupted spike of 3 to 5 whorls; fruit shortly pediceled or 

 sessile. 



Moist spots, 50 to 1500 feet : Colorado Desert. East to the Atlantic. Apr., fr. 

 July. 



Loc. — San Diego Co., Orcutt. 



Var. cuneata Jepson. Fruits very abruptly short-acute at base. — Southern California ; San 

 Francisco Bay region; northern Sierra Nevada. East to Texas. 



Locs. — Jamul, San Diego Co., Orcutt; Lake Hodges, San Diego Co., MacFadden; Santa 

 Barbara (Contrib. U. S. Nat. Herb. 7:28) ; Asilomar, Monterey, Parish 11,537; Crystal Springs 

 Lake, San Mateo Co., Elmer 4960 ; Suisun Marshes, Jepson 14,238 ; Mohawk Valley, Plumas Co., 

 Lemmon 2710. 



Refs. — Hydrocotyle verticillata Thunb. Diss. 2:415, pi. 3 (1800), type loc. unknown ace. 

 Coulter & Rose, Contrib. U. S. Nat. Herb. 7:27; Jepson, Man. 705 (1925). Var. cuneata Jepson, 

 Madrono 1:124 (1923) ; Man. 705 (1925). E. cuneata C. & R. Contrib. U. S. Nat. Herb. 7:28, 

 fig. 1 (1900), type loc. Montezuma Well, Ariz., McBougall 575; Jepson, Fl. W. Mid. Cal. ed. 2, 

 288 (1911). 



4. H. prolifera Kell. Marsh Pennywort. Peduncles and petioles subequal, 

 6 to 12 inches high; descending branches of the rootstock tuberous-enlarged; leaves 

 peltate, the blades orbicular, emarginate at base, slightly crenate, 1^/4 to 1% inches 

 broad; umbels proliferous, one above the other in 2 to 4 whorls; pedicels li/o to 7 

 lines long; mature fruit 1 line long and slightly broader, slightly notched at base 

 and apex. 



Wet bottoms, 5 to 500 feet : delta of the lower Sacramento and San Joaquin 

 rivers and west to the coast. June, fr. Aug.-Sept. 



Locs.— Bouldin Isl. (Zoe 4:214) ; Antioch, Gondii; Santa Rosa, If. S. Balcer; San Francisco 

 (Contrib. U. S. Nat. Herb. 7:26). 



Refs. — Hydrocotyle prolifera Kell. Proc. Cal. Acad. 1:15 (1854), type loc. about San 

 Francisco, Kellogg; Jepson, Fl. W. Mid. Cal. 342 (1901), ed. 2, 288 (1911), Man. 705 (1925). 



2. BOWLESIA R. & P. 



Delicate annuals with stellate pubescence, opposite simple leaves and scarious 

 lacerate stipules. Umbels simple, few-flowered, on short axillarj^ peduncles. Bracts 

 in ours few and scarious or none. Flowers white, minute. Calyx-teeth prominent. 

 Fruit ovate, somewhat flattened laterally, with narrow commissure; carpels tur- 

 gid, becoming depressed on the back. Ribs and oil-tubes none. — Species 18, South 

 and North America. (Wm. Bowles, 1705-1780, Irish naturalist and traveler.) 



1. B. lobata R. & P. (Fig. 267.) Stems mostly branching at the base, weak 

 and trailing, % to 2 feet long, flowering from the base; leaf -blades suborbicular- 

 cordate (or sometimes suborbicular) but always broader than long, thin, mostly 

 5-lobed, 14 to 1 inch broad, the lobes entire or some of them 1 or 2-toothed; petioles 

 1 to 3 inches long or the upper shorter; umbels 1 to 4-flowered; fruit 1 line long. 



