GENUS 5. 



BLADDERWORT FAMILY. 



231 



strongly and divergently 3-lobed; palate usually very prominent and 2-lobed. Anthers not 

 lobed. Capsule many-seeded. Seeds prismatic, reticulate. [Latin, seta, a bristle, and scapus, 

 scape, from the stiff, bristle-like scapes.] 



About 12 species, chiefly American; i species in tropical Africa and 2 in Asia. Type species: 

 Utricularia subulata L. 



Corolla yellow, the lower lip conspicuous, 2' '-4" long; spur conic. i. 5". subulata. 



Corolla white or purplish, both lips minute, less than J4" long; spur saccate. 2. S. cleistogama. 



i. Setiscapella subulata (L.) Barnhart. Zig- 

 zag or Tiny Bladderwort. Fig. 3871. 



Utricularia subulata L. Sp. PI. 18. 1753. 



Utricularia setacea Michx. Fl. Bor. Am. i: 12. 1803. 



Scape filiform, stiff, ii'-o/ high, i-12-flowered, the 

 pedicels capillary, ii"-3" long. Calyx-lobes minute, 

 about ' long, becoming i"long in fruit; corolla pale 

 yellow, 3" -6" long, the upper lip ovate, obtuse, the 

 lower 2"-4" long, strongly and divergently 3-lobed, 

 with a prominent faintly 2-lobed palate ; spur flat- 

 tened-conic, obtuse, but acute in outline when viewed 

 from the side, appressed to and about equalling the 

 lower lip; capsule globose, i" in diameter; seeds 

 irregularly ovoid. 



In wet sandy soil, Nantucket to Florida, west to Ar- 

 kansas and Texas. Also in the West Indies. July-Aug. 



2. Setiscapella cleistogama (A. Gray) Barn- 

 hart. Pin or Closed Bladderwort. Fig. 3872. 



U. subulata var. cleistogama A. Gray, Syn. Fl. 2 1 : 317. 1878. 

 U. cleistogama Britton, Trans. N. Y. Acad. Sci. 9: 12. 1889. 



Scape filiform, stiff, \'-2\' high, i-3-flowered, the 

 pedicels i"-3" long. Calyx-lobes minute, the upper 

 faintly 7-nerved, the lower strongly 5-nerved ; corolla 

 dirty-white or purplish, \" in diameter or less, cleistoga- 

 mous (?), consisting chiefly of the large saccate spur, 

 the lips minute, obtuse, the lower faintly 3-lobed ; cap- 

 sule globose, \" in diameter; seeds very minute and 

 numerous, irregularly ovoid, iV' long. 



In wet soil, eastern Massachusetts, Long Island and New 

 Jersey. Rare and local. July-Aug. 



6. STOMOISIA Raf. Fl. Tellur. 4: 108. 1838. 



Terrestrial scapose herbs, with tufts of root-like bladder-bearing branches arising from 

 near the base of the scape, and few extremely delicate leafy branches radiating horizontally 

 from the same region, so inconspicuous and so readily detached from the scape that they are 

 rarely seen. Leaves delicate, some linear, erect, and grass-like, others colorless and root-like, 

 bladder-bearing. Bladders minute and rudimentary, beaked but without bristles. Inflores- 

 cence racemose or subspicate, sometimes reduced to a single flower; scales on the lower 

 portion of the scape several, basally inserted ; pedicels from the axils of basally inserted 

 bracts, with an inner pair of opposite lateral bractlets. Calyx 2-parted, the lobes thin, veiny, 

 appressed to and exceeding the mature capsule. Corolla 2-lipped, the lips nearly distinct, the 

 upper narrow, erect, with a distinct claw, the lower with a prominent galeate palate, the edge 

 of the 'aperture of the spur usually ciliate. Anthers vertically 2-lobed. Capsule many-seeded. 

 Seeds very minute, subglobose or prismatic, reticulate or areolate. [Greek, hairy mouth, 

 from the ciliate aperture of the spur in the type species.] 



About 50 species, of wide geographic distribution. Type species: Utricularia cornuta Michx. 

 Corolla much exceeding the calyx. 



Lower lip of corolla 6"-8" long; spur 3 J/"-6" long. i. S. cornuta. 



Lower lip of corolla 4" -5" long; spur 2 l / 2 "-4" long. 2. S. juncea. 



Corolla shorter than or about equalling the calyx. 3. 5". virgatula. 



