272 MONOPETALOUS 0KDER3. 



ternate with its segments ; filaments long ; anthers versatile. 

 Ovary free, 2-4-celled; 5^^Z<? simple, capillary; stigma hispid. 

 Pyxide 4-celled, many-seeded. Seeds sessile, peltate, or erect, 

 solitary, twin, or indetinite ; eiiibryo in the axis of fleshy albu- 

 men. 



a. Properties : useful as a pot-berb ; emollient. 

 Genus. — Plantago. 



481. PLUMBAGiNACEiE, tlie LeadwoH Tribe. — Herbs or under- 

 shruljs. Leaves alternate or clustered, somewhat sheathing at 

 the base. Calyx tubular, plaited, persistent. Corolla regular ; 

 limb 5-parted. Stamens 5, opposite the petals, hypogynous in 

 the gamoi^etalous species, in the polypetalous arising from 

 the petals. Ovary 1-celled ; ovule pendulous from a funiculus 

 which arises from the bottom of the cell. Fruit a utricle ; em- 

 l/ryo large, in the axis of mealy albumen. 



a. Properties : astringent. 

 Genus. — Statice. 



482. Lentibulakiace^, the Butterwort Tribe. — Herbs, growing 

 in water or marshes. Leaves radical, sometimes compound, re- 

 sembling roots, and bearing little air-bladders which render them 

 buoyant. Floicers showy, very irregular. Calyx divided, per- 

 sistent, inferior. Corolla bilabiate, irregular, usually spurred. 

 Stamens 2, inserted into the base of the corolla, and included. 

 Ovary free, l-edledi', placenta free, central; ovules numerous. 

 Fruit a capsule. Seeds minute, albuminous ; einbryo straight. 



Geneea. — Pinguicula, Urtricularia. 



483. Okobanchaceje, the Broom-Bape Tribe. — Herbaceous, 

 leafless plants, parasitic on the roots of other plants. Stems 

 covered with brown or colorless scales. Calyx inferior, persist- 

 ent, 4 or 5 toothed, or bilabiate. Corolla withering or j)ersist- 

 ent, irregular, usually bilabiate. Stamens 4, didynamous, in- 

 serted in the corolla. Ovary free, 1-celled, with two parietal 

 placenta?. Fruit a capsule inclosed in the persistent corolla. 

 Seeds nmnerous, minute ; emhryo very minute, at one end of 

 fleshy albumen. 



a. Properties : astringent, bitter, escharotic. 

 Geneua. — Epipliegus, Orobanche, Obolaria. 



484. GEsxEEiACEiE, the Gesnera Tribe. — Herbs or shruls, 

 Irequently springing from scaly tubers. Leaves opposite or 

 whorled, mgose. Floivers showy, in racemes or panicles, rarely 

 solitary. Calyx 5-]3arted, partially adherent. Corolla tubular, 

 5-lobed, more or less irregular. Staraens 2 or 4, didynamous ; 

 anthers often cohering. Ovary partly free, 1-celled. Dislc sur- 

 rounding the base of the ovary. Fruit 1-celled, succulent or 



