PINGUICULACEAE 1089 
oblong, obtuse : capsules 9-13 mm. long, the body ovoid, longer than the base, acute. 
[Shaueria parvifolia Torr. Dianthera parvifolia (Torr.) A. Gray. ] 
In dry soil, Texas and New Mexico. 
FAMILY 15. PINGUICULACEAE Dumort.! BLADDERWORT FAMILY. 
Small scapose or caulescent herbs, growing in water or in wet places. Stems 
often submersed. Leaves submersed and dissected into linear or filiform seg- 
ments, sometimes resembling rootlets and often bladder-bearing ; sometimes 
aérial, basal, entire; or, rarely, wanting. Scapes naked or furnished with mi- 
nute scales, bearing one or many flowers. Flowers irregular, perfect, often 
showy. Calyx of 2 or 5 herbaceous sepals. Corolla strongly or obscurely 2- 
lipped : tube spurred or saccate: hypogynous. Androecium of 2 stamens, ad- 
nate to the base of the corolla-tube on its upper side. Filaments flattened, 
twisted. Anthers confluently 1-celled. Gynoecium a single 1-celled pistil, 
with a free-central usually globose placenta. Style thick and short. Stigma 
often 2-lipped, the lips unequal. Ovules numerous, anatropous. Fruit a capsule, 
2-valved or irregularly dehiscent. Seeds numerous, the testa rugose. Endosperm 
wanting. Embryo straight, sometimes undivided. [Lentibulariaceae Lindl.] 
Calyx of 5 sepals: corolla-tube with an open throat. 1. PINGUICULA. 
Calyx of 2 sepals: corolla-tube closed by a palate. 
Calyx accompanied by 2 bractlets resembling the sepals, and like them, conspicu- 
ously ciliate. 2. COSMIZA. 
Calyx without bractlets: sepals entire. 3. UTRICULARIA., 
1. PINGUÍCULA L. 
Terrestrial scapose herbs, inhabiting wet ground. Leaves forming a basal rosette : 
blades flat, entire, furnished above with a secretion by which, together with the sensitive 
inrolling margins, insects are captured. Scapes usually several, 1-flowered. Sepals 5, often 
more or less united. Corolla yellow, violet or purple, more or less distinctly 2-lipped : 
palate subulate, not closing the throat : lobes entire or cleft: tube prolonged into a nectarif- 
erous spur at base: throat open. Stamens 2. Capsules 2-valved. BuTTERWORT. 
Corolla violet or white, the limb distinctly 2-lipped. 
Corolla, including spur, less than 2 cm. long. 1. P. pumiia. 
Corolla, including spur, more than 2 em. long. : 
Spur slender: scapes villous at the base. 2. P. elatior. | 
Spur short and rather sac-like: scapes not villous at the base. 3. P. planifolia. 
Corolla golden-yellow, the limb nearly regular. 4. P. lutea. 
1. Pinguicula pumila Michx. Leaves clammy-pubescent; blades 1-3 cm. long: 
scapes very slender, 5-20 cm. tall, not villous at the base: calyx becoming 3-4 mm. long: 
corolla light violet, varying to white; limb 1-2 cm. broad ; spur subulate, about 3 mm. 
long, longer than the sac-like base of the corolla. 
In low pine lands, South Carolina to Florida and Texas. Spring. 
2. Pinguicula elàtior Michx. Leaves clammy-pubescent ; blades 1.5-3.5 cm. long: 
scapes 1-3 dm. tall, villous at the base: calyx becoming 4-5 mm. long: corolla purple, 
varying to white; limb 2-2.5 cm. broad, the lobes 2-cleft ; spur slender, 4-6 mm. long, 
shorter than the sac-like base of the corolla, obtuse. 
On margins of ponds, North Carolina to Florida. Spring. 
3. Pinguicula planifólia Chapm. Leaves glabrous or nearly so; blades 3-10 cm. 
long : scapes 2-4 dm. tall, not villous at the base: calyx becoming 5-6 mm. long: corolla 
purple, varying to white, 2-3 cm. wide: spur rather sac-like, only 3 mm. long, obtuse. 
In shallow water, Florida to Mississippi, near the Gulf coast. Spring. 
4. Pinguicula lütea Walt. Leaves clammy-pubescent ; blades 2-6 cm. long : scapes 
1-4 dm. tall, pubescent: calyx becoming 4-5 mm. long: corolla golden-yellow ; limb 2- 
3.5 em. broad ; lobes longer than the tube, 2—4-lobed ; spur subulate, 5 mm. long. 
In low pine lands, North Carolina to Florida and Louisiana. Spring. 
2. COSMIZA Raf. 
Terrestrial scapose herbs, with the habit of the terrestrial species of Utrieularia. 
Leaves basal, often fugacious: blades linear or narrowly spatulate, sometimes bladder- 
! Revised by Dr. John H. Barnhart. 
69 
