Cnucri,.4niA. LXXXVl. LE^'TIEULACE^i:. 391 



than the corolla.— Wet rocks and thin, damp soils, N. ?. (near Rochester 

 newey, Beck.) N. to Arctic Am. Hooker. Scape 6—8' high, with .solitary nodi 

 dmg (lowers. Leaves all springing from the root, fleshy, spitulate or ovate 

 xvitli a tapering base, fleshy and unetioas to the touch. Corolla with a purple 

 lube, linea Vv-iih so.'i hc.irs. Fioweiing early in Apiil and May. 



2. U T R I C U L A R I A . 

 Lat. utricu'tt, a iittie liotl-le ; alluding to the uir-vesc-el.s appended to the roots. 



Calyx 2-parted, subequal ; corolla irregularly bilabiate, ijersonate. 

 spurred; sta. 2; stig. bilabiate; caps, globular, 1 -celled. — Herbs 

 aqualic, Icoscbj Jloaling or fixed in the mud. Lvs. radical., multifid or 

 I'mear and entire, mostly furnished with little infiated vesicles. Scape erect. 

 § Floating. Leaves capillacemis^ midtificl Boots few or 0. Branches 

 pi^oducing turions at apex. 



1. U. iNPL.^TA. Walt. (U. ceratophylla. M.t.) WJiorled BlarJdcrwort 

 Upper lvs. in a whorl of 5 or G at the surface ol'the water; pclio'e and mid- 

 rein inflated, Itnrcr lvs. capillaceous, dissected, submerged ; scape 4— 5-flov'«red 

 — T; In ponds, Mas.s. to Car., W. to Ohio. The proper stem (rhizoma 1)18 

 veiy lung, branching, suspended in the wat€r by a single, irregular whorl of 5 

 or 6 floating, inflated leaves which are oblong, cle.t, and pinnatifid at the end 

 Flowers 4—5 together upon a sc;.pe 8' in length, pedunculated, with .sheathin^^ 

 br;icts. Spur nearly as long as the corolla, appressed to the lower lip, striate' 

 emarginate. Cor. yellow, the upper lip broad-ovate, entire, lower 3 lobe'd. Au"-'. 



2. U. VULGARIS. (U. macrorhiza. Le Omfc.) Comvion Bladderwnrt. 

 L,rs. all submersed, capillaceous, multifid, fibrillose or setaceous; vesicles 



numerou.s, .small; s'.ox rhizmna very long, floating; scape s\m-p\e. 5 — 1 {-flower- 

 ed ! spur conical, obtuse, .shorter than the corolla. — % In .stagnant pool.s, U. S. 

 and Can. Floating stems .several feet long, very branching. Leaves very nu- 

 merous, 1' in length. Utricles furnished with a (ringed, valvate aperture 

 usually inflated. Scape 5 — iO' high, stout, arising out of the water. Flowers 

 alternate, showy, yellow, 5— G" long, lower lip larger, with a project'inff palate 

 Mriped with brown. Jn. Jl. ^ j & r i 



3. LT. iNTKRMEDiA. Havne. 



Lvs. all submeiscd, in 2 rows, dichotomously many-parted, without vesi- 

 cles, roundish in outline, segments ciliolate-denti'culaie; Icajlcs'; branches with 

 lateral vesicles and terminal turions; Us. few; lips entire; ip^^r conical, acute 

 appres.sed to the lower lip. — '21 Pools, Mass. Ro/jdins J R.I. Prov. Frank. Soc. 

 Floating stems branched, a loot long. Leaves about 3" long, numerous. Turions 

 much larger than the vesicles, green, .scaly, producing new plants like bulbs 

 Flowers 4^5" long, sulphur-yellow. 



4. U. STRIATA. Le Conte. 



Lrs. numerously subdivided, submerged, with vesicles; scape 'i. — fi-flower- 

 ed, with a few scales ; /o/cct-s large, yellow, upper lip broad, divided into 3 

 lobes, the middle lobe striate with red, lower lip crenate, sides ivflexed, havin<^ 

 dark spots upon the palate; rpur slender, obtuse, with a notch at the encf 



pressed against the lower lip of the corolla and nearly as long. Native of 



swamps, Mass. to Flor. Root submerged, slightly attached to the inud. Leaves 

 (radicles'!) few, capillary, appendsged with few air ve.ssels. Scape afoothio-h 

 generall}' voth 2 flowers. June. "^ ' 



5. U. GiBBA. Li.nn. (and Le Cmitc.') 

 Minute, floating, leafless"? with few utricles and turions; scape about 2 



iper 

 nb- 



... . . , , — sed 



stems dichotomous. Scapes 2 — 3' high, generally with but 2 small, yellow 

 flowers. Spur swelling outv/ard in the middle. JL 

 0. U. FOR.vicATA. Le Conte. (U. minor. Ph.) 



S's, numerous, fibrillose-branched, floating, utriculate ; scape mdzed, 1 — 2- 

 flowered: upper lip of the corolla 3-lobed, central lobe incurved over the palate. 



