Utricularia. | LENTIBULARIEX. 559 
A small but very distinct order, comprising 4 genera and about 250 species. 
It is remarkable on account of the roots or leaves often being provided with small 
bladder-like appendages, which catch minute aquatic animals. The single 
genus found in New Zealand is almost world-wide in its distribution. 
1. UTRICULARIA, Linn. 
Slender herbs, floating or terrestrial. Leaves of the terrestrial 
species all radical, inconspicuous or fugacious; of the floating 
species scattered, multifid with capillary segments, furnished with 
floating bladders. Peduncles or scapes radical or axillary, either 
1-flowered or bearing a few- or many-flowered raceme or spike. 
Calyx 2-partite; segments entire or nearly so, often enlarged in 
fruit. Corolla spurred at the base, 2-lipped ; upper lip erect, entire 
or 2-lobed; lower lip larger, spreading, 3-6-lobed, with a palate 
projecting into the throat and almost closing the flower. Stamens 
2; filaments incurved. Style short; stigma unequally 2-lobed. 
Capsule globose or nearly so, 2-valved or bursting irregularly. 
Seeds many. 
A large genus of world-wide distribution, the species probably numbering 
close upon 200. With the exception of U. monanthos, which extends to 
Tasmania, all the New Zealand species are endemic. They are also very 
imperfectly known, and require a careful study from fresh specimens. 
A, Stems floating. Leaves submerged, multifid; segments capillary. 
Stems often several feet in length; branches with the 
leaves on 14-3 in. across ae oh ff} 
Stems 2-6in. long; branches with the leaves on fin. 
across Ne Sc ek te Ae oe) 25 Oe Mannie 
1. U. protrusa. 
B. Plants stemless, growing in bogs or wet soil. Leaves all radical, few, small, 
narrow-linear, entire. . 
Flowers pale-purple. Upper lip of corolla not 2-lobed ; 
lamina of lower lip broad, entire; spur short, obtuse .. 3. U. nove-zealan- 
die. 
Flowers white. Upper lip of corolla 2-lobed ; lamina of 
lower lip broad, entire; spur long, acute, minutely 
2-horned at the tip .. a: 3¢ He .. 4. U. delicatula. 
Upper lip of corolla 2-lobed; lamina of lower lip 3-lobed 5. U. Colemnsov. 
Flowers dark violet-purple. Upper lip of corolla cuneate, 
retuse ; lamina of lower lip very broad; spur short .. 6. U. monanthos. 
1. U. protrusa, Hook. f. Fl. Nov. Zel. i. 206.—Stems floating 
in still water, branched, often extending to a length of several 
feet, slender, filiform. Leaves numerous, all submerged, spreading, 
pinnately multipartite; segments many, filiform; bladders nume- 
rous, about fin. long, obliquely ovoid, shortly pedicelled, attached 
near the base of the segments. ‘‘ Scape stout, erect, 2—4-flowered. 
Sepals oblong. Corolla yellow; upper lip 3-lobed ; lower broader, 
subquadrate, its disc protruded, margins recurved. Spur short, 
obtuse.” —Handb. N.Z. Fl. 222. 
