CUCURBITACEAE. 351 



and alternate with its lobes; filaments distinct. Ovary 

 inferior, 1 -celled; style filiform; stigma undivided, 

 terminal or lateral; ovule 1, pendulous. Fruit an 

 achene, its apex crowned with the persistent calyx-lobes. 



1. DIPSACUS L. 



Rough-hairy or prickly, tall erect biennial or peren- 

 nial herbs, with opposite dentate or pinna tifid, usually 

 large leaves, and blue or lilac flowers in dense terminal 

 peduncled oblong heads. Bracts of the involucre and 

 scales of the receptacle rigid or spiny-toothed. Calyx- 

 limb cup-shaped, 4-toothed or 4-lobed. Corolla oblique 

 or 2-lipped, 4-lobed. Stamens 4. Stigmas oblique or 

 lateral. Achene free or adnate to the involucel. 



1, D. fuUonum L. (Fuller's-teasel.) Biennial, stout, with 

 numerous short prickles on the stem, branches, midribs of the 

 leaves and involucre, otherwise glabrous or nearly so, 1-2 m. high; 

 leaves sessile or the upper ones connate-perfoliate, lanceolate or 

 oblong, entire, the lower obtuse, crenate; leaves of the involucre 

 spreading or reflexed, shorter than the head; heads ovoid, becoming 

 cylindric, 6-10 cm. long; scales of the receptacle with hooked tips, 

 about equaling the flowers; flowers lilac, 8-12 mm. long. 



Occasional in moist places about Los Angeles. Native of Europe. 



FamUy 102. CUCURBITACEAE. Gourd Family. 



Herbaceous vines, climbing or trailing by means of 

 tendrils, with alternate petioled leaves, and solitary or 

 racemose monoecious or dioecious flowers. Calyx-tube 

 adnate to the ovary, its limb usually 5-lobed. Petals 

 usually 5, inserted on the limb of the calyx, separate or 

 united. Stamens mostly 3, 2 of them with 2-celled 

 anthers, the other with a 1 -celled anther; filaments 

 short, often somewhat united. Ovary 1-3-celled; style 

 simple or lobed ; ovules few or numerous. Fruit a pepo, 

 indehiscent or rarely dehiscent at the summit, or burst- 

 ing irregularly. Seeds usually flat. 



Flowers yellow, large; fruit indehiscent, smooth. 1, Cucurbita. 

 Flowers white or greenish, small; fruit dehiscent 



at summit, prickly. 2. Micrampelis. 



