188 PRACTICAL BOTANY. 



453. Leafless root-parasites, thick and fleshy, bearing 

 scales in place of leaves, lurid yellowish or brownish through- 

 out. Flowers solitary, or spiked, or panicled 454 



Leafy plants 456 



454. Flowers solitary, without bractlets. Corolla sliglit- 

 ly 2-lipped. Upper lip 2-, lower 3-cleft. Herb glandular-pu- 

 bescent. Aphyllon. 



Flowers spiked, or panicled. Calyx with 2 bract- 

 lets. Corolla ringent; upper lip notched, lower 3-parted. An- 

 thers sagittate 455 



455. Stamens exserted. Calyx deeply cleft on the lower 

 side. Corolla swollen at the base. Herb smooth. 



Conopholis Americana, Wallr. 



Stamens included. Calyx nearly regularly 5-cleft. 



Corolla not swollen at the base. Herb glandular-pubescent. 



Phelipaea Ludoviciana, Don. 

 ( Conopholis, Wood.) 



456. Ovules or seeds solitary in the cell, or cells of the 

 ovary, or fruit 457 



Ovules or seeds several or many, rarely few in the 

 2, rarely 4 cells of the ovary, or pod 458 



457. Fruit reflexed and closely appressed to the rhachis, 

 1-celled, 1-seeded, dry, oblong, striate. Calyx 2-lipped, cyl- 

 indrical ; the upper, longer lip of 3 subulate, bristle-pointed 

 teeth, the lower 2-toothed. Corolla with the upper lip notch- 

 ed, the lower 3-lobed, much larger. Leaves large, ovate-ob- 

 long, coarsely toothed, 3-6 inches long, short-petioled. Flow- 

 ers spiked. Phryma leptostachya, L. 



Fruit in axillary, peduncled heads, a dry, 2-celled, 

 2-seeded drupe. Calyx membranaceous, enclosing the fruit. 

 Leaves oblanceolate, serrate above. Corolla bluish-white; 

 upper-lip notched, lower much longer and 3-lobed. Procum- 

 bent and creeping. Flowers small, in heads, raised on slen- 

 der axillary peduncles. Iiippia lanceolata, Mx. 



458. Pod 2-celled 459 



Pod 4-celled, with a long beak, which is longer than 



the pod itself, and becomes 2-horned by dehiscence. Calyx 5- 

 cleft. Corolla gibbous, bell-shaped, 5-lobed, slightly 2-lipped. 

 Stamens 5, one sterile. " Low, branching, glandular-hairy, 

 strong-scented annuals, with large flowers. Leaves cordate.450 



