OR0KB 81.— LBNTIBULACB^. 609 



5 ACAlTTHOIibMON caiyophyll^oeum Boiss. (S. Eolimua L.), turfy, 

 ▼ith stiff, linear, 3-comered, needle-shaped, recurved Iva. and scape, twice aa high, 

 bearing a single spike. — f Prom Asia. 



Order LXXXI. LENTteULACELE. Butterworts. 



Herbs small, growing in water or wet places, with showy, bilabiate fls. on scapes. 

 Oalyx inferior, of 2 or 3 sepals. Corolla in-egular, bilabiate, personate, spurred. 

 Stamens 2, included within the corolla and inserted on its upper lip. Anth. 1- 

 colled. Ovary 1-celled, with a free, central placenta. Style 1. Stigma elefl. 

 Fi'uit. Capsule many-seeded. Seeds minute. Embryo straight, with no albu- 

 men. 



Genera 4, species 175, natives of swamps, pools, and rivulets, diffused throughout nearly ali 

 countries. Properties unimportant. 



1. PINGUIC'ULA, L. BuTTBRWORT. (Lat. pinguis, fat, from the 

 greasy appearance of tlic leaves.) Calyx 5-parted, somewhat bilabiate ; 

 cor. bilabiate or rarely subregulav, upper lip bifid or 2-parted, lower 

 trifid or 3-parted, spurred at base beneath ; sta. 2, very short ; stig. 

 sessile, 2-lobed ; caps, erect ; seeds co. — 2f In wet places. Lvs. radi- 

 cal, rosulate, entire. Scapes 1 -flowered, nodding. 



* Flowers blue Nos. 1, 2, 3. ** Flowers yellow No. 4 



1 P vtilg^ris L. Lvs. ovate or elliptic, obtuse, unotious-puberulent above, scape 

 and calyx subpubescent ; cor. lips very unequal, lobes obtuse, entire; spur cylin- 

 drical, shorter than the corolla. — Wet rocks and thin, damp soils, N. T. (near Ro- 

 chester, Dewey, Beck.) N. to Arctic Am. {Hoolcer.) Scape 6 — 8' high, with soli- 

 tary, nodding fls. Leaves all springing from the root, fleshy, spatulate or ovate, 

 with a tapering base, fleshy and unetious to the touch. Corolla vrith a purple 

 tube, lined with soft hairs. Flowering early in Apr. and May. 



2 P. eldtior Mx. Lvs. ovate-spatulate, scape villous at base; cal. glandular- 

 puberulent ; cor. tube ventricous, hairy within, lobes subequal, emargmate, ; spur 

 compressed, obtuse, about half as long as the tube. — ^Wet grounds, S. Car. to Fia., 

 more common in the middle districts. The lvs. are very small proportionately 

 (scarcely 1' long in our specimens), while the slender and bractless scape is 8 to 

 14' high. Sep. oblong, obtuse, the 2 lower approximating. Cor. 1' to 15" long, 

 greenish blue? with purple lines. Mar., Apr. 



3 P. pumila Mx. Dwarp Butteewort. Lvs. roundish-ovate, glabrous ; cor. 

 tube oblong, lobes emarginate, spur neairly as long as the tube, nearly acute ; caps, 

 globous. — Ga. and Fla. to La., common in springy places. Lvs. 3 to 4" diam,, 

 Hiin. Scapes filiform, 2 to 4' high. Fls. vary in size with the plant, from 3" to 

 T' long, pale blue. Apr. 



4 P. Idtea "Walt. Lvs. obovate, elliptic; cor. bell-shapod, palate hairy, lobos 

 subequal, sinuate-dentate ; spur slender, a third as long as the cor. — Car. to Fla., 

 common in the low country in wet grounds. Lvs. 1' long, nearly as wide, soft, 

 yellowish green, curled, the scape about 6' high. Fla. mucn smaller than in No. 



2, bright yellow. Spur 2 to 3" long. ' Mar., Apr. 



2. UTRICULA'RIA, L. Bladderwort. (Lat. utricula, a little 

 bottle ; alluding to the air vessels appended to the roots.) Calyx 2- 

 parted, lips subequal ; corolla irregularly bilabiate, personate, spurred ; 

 stamens 2 ; stigma bilabiate ; capsule globular, 1-celled. — Herbs aqua- 

 tic, loosely floating, or fixed in the mud. — Lvs. radical, multifid or lin- 

 ear and entire, mostly furnished with little inflated vescieles as buoys. 

 Scape erect. 



S Floating. Scape Involucrate, with a whorl of large, inflated petioles. No. 1 



§ Floatinp. Scape naked. Branches producing bulblets and bladder.s (a). 



a Flowers purple. Bi-aneJies whorled, 6ubmersQ<l Nc. 2 



