MOXOPETALOUS EXOGENOUS PLANTS. 397 



the lobes wedge-obovate ; stamens 4, didynamous, included; 

 anthers 1-celled; style simple, club-shaped at the apex; 

 capside coriaceous, straight, loculicidally 2-valved, the valves 

 entire; seeds numerous, reticulate. — Eough herbs, turning 

 black in withering ; leaves opposite, toothed or entire, the 

 uppermost small, and passing into the bracts of the many- 

 flowered spike ; floivers blue. 



B. ELONGATA, Swartz. Eough with short rigid hairs; 

 stem mostly simple; leaves entire or slightly toothed, 

 1-nerved or obscurely 3-nerved, the lowest obovate or obo- 

 vate-oblong, obtuse ; the lower stem-leaves narrowly lanceo- 

 late, the uppermost distant, acute; spikes interrupted, 

 long-peduncled ; floivers opposite or alternate. Low pine- 

 barrens. Stem l°-2° high; corolla 4' -5" long. 



SEYMEKIA, Pursh. 



Calt/x 5-parted; corolla bell-shaped, 5-lobed, the lobes 

 oblong; stamens 4, equal, the filaments woolly; anthers 

 oblong, opening at the apex, awnless ; style simple, obtuse ; 

 capsule ovate, flattened above, loculicidally 2-valved ; seeds 

 numerous, covered by the loose hyaline testa. — Chiefly 

 annuals ; stems erect, branching; leaves opposite, pinnately 

 divided ; flowers yellow, in terminal leafy-bracted racemes. 



S. TENUiroLiA, Pursh. Smooth or nearly so ; stem with 

 elongated erect-spreading branches; leaves pinnate, the 

 entire or lobed divisions filiform ; capsule smooth, acute at 

 the base, shorter than the pedicel. Low pine-barrens. 

 Stem 2°-4° high. 



S. PECTiNATA, Pursh. Viscid-pubcscent ; stem with 

 ascending branches; leaves pinnatifid, the entire obtuse 

 divisions oblong-linear; capsule hairy, obtuse at the base, 

 as long as the pedicel. Stem G -18' high. 



