te 
to 
a 
LENTIBULARIACEAE, Vor. III. 
2. Pinguicula vulgaris L. Common Butter- 
wort. Bog Violet. Fig. 3859. 
Pinguicula vulgaris L. Sp. Pl. 17. 1753. 
Scapes glabrous or nearly so, 1’-6’ high, little if 
at all elongating in fruit. Leaves 3-7, the blades 
ovate to elliptic, obtuse, 4’-14’ long, the margins 
usually inrolled; calyx 14’-24” long, the lobes ob- 
tuse, the 2 lower ones more or less united; corolla 
violet- purple, 7-10" long including the ‘subulate 
acute spur, 2-lipped, the lips equally spreading, the 
upper 2-lobed, the lower 3-lobed; capsule ovoid, 
’ long, at” —3’" in diameter. 
re wet rocks or gravelly places, circumpolar; south- 
ward in America to Newfoundland, New Brunswick, 
Vermont, northern New York, Michigan, Minnesota, 
Montana, and British Columbia. June-July. Bean- 
weed. Yorkshire sanicle. Sheep- root or -rot. Rot-grass. 
Sheepweed. Steep or earning-grass, from its use in 
curdling milk. 
Pinguicula alpina L., reported from Labrador on 
account of a single specimen said to have been col- 
lected there many decades ago, probably does not occur 
in North America. It has flowers about the size of 
those of P. vulgaris, but nearly white and with a very 
much shorter obtuse spur. 
2. VESICULINA Raf. Fl. Tellur. 4: 109. 1838. 
Aquatic herbs, with horizontal submerged stems, the branches verticillate, and verticil- 
lately or oppositely decompound. Leaves, at least in the adult plant, none. Bladders terminal 
on the ultimate branches, the mouth naked or with a single median hairy proboscis. In- 
florescence racemose, I-4-flowered; scales on the lower portion of the scape none; pedicels 
from the axils of bracts, without bractlets, erect in fruit. Calyx 2-lobed, the lobes herba- 
ceous, concave. Corolla strongly 2-lipped, the upper lip not lobed, the lower lip 3-lobed, the 
lateral lobes saccate and together constituting a prominent 2-lobed palate, the middle lobe 
flat, comparatively inconspicuous. Anthers not lobed. Capsule many-seeded. Seeds tuber- 
culate. [Latin, vesicula, a little bladder.] 
About 6 species, confined to the New World. Type species: Utricularia saccdta LeConte. 
1. Vesiculina purpurea (Walt.) Raf. 
Purple Bladderwort. Fig. 3860. 
Utricularia purpurea Walt. Fl. Car. 64. 1788. 
U. saccata LeConte; Ell. Bot.S.C.& Ga. 1: 21. 1816, 
Vesiculina saccata Raf. Fl. Tellur. 4: 109. 1838. 
Vesiculina purpurea Raf. loc. cit. 1838. 
Stems 1°-3° long, the internodes 17-2’ long, the 
primary branches in whorls of 5-7, verticillately 
“ decompound. Leavesnone; bladders 1-14” long, 
without bristles, the exterior surface of the valve 
with a central tuft of glandular hairs; scape 2’-6’ 
high, 2-4-flowered; bracts membranaceous, basally 
attached, or more commonly with a free portion 
ah aN Die 
below the line of insertion; pedicels 3”-4” long, 
ee pea in fruit calyx: lobes saa, 13” SW 1 oi Nay 
ong; corolla red-purple, t ie upper lip subrhom- ‘i 14 
boid, about 4” long and 6” broad, concave, the EAs cal 
lower lip 4”-6” long and broad, with a yellow AS 
spot at the base; spur conic, appressed to and 3 eA 
shorter than the lower lip; capsule 14” in diam- : =A oor <a S 
eter; seeds numerous, minute, tuberculate-spiny, A : ea 
especially toward each end, ih f "ae 
In ponds, Maine to Florida and Louisiana, near VOM RSs ae, 
k iA 
the coast, also Michigan and Indiana to Minnesota. 
Hooded or horned milfoil. July—Sept. 
3. UTRICULARIA L. Sp. Pl. 18. 1753. 
Aquatic herbs, with horizontal submerged leafy stems. Leaves alternate, dissected, some- 
times root-like, 2-8-parted from the very base, and thus often appearing opposite or verti- 
cillate, the segments dichotomously or pinnately dissected, some or all of them bladder-bearing. 
Bladders with a pair of bristles and more or less other armature about the mouth. Inflores- 
cence racemose, the raceme sometimes reduced to a single flower; scales on the lower portion 
of the scape, when present, basally attached, sometimes replaced by a whorl of inflated 
