846 GESNERIACEAE. | Rhabdothamnus, 
1. R. Solandri 4A. Gunn. Precur. (1838) n. 385.— Slender, much 
branched, 2-5 ft. high; branches opposite, terete, everywhere rough with 
short stiff greyish pubescence. Leaves on slender petioles; blade vari- 
able in size, usually 4-1 in. long, but sometimes over 21in., broadly ovate 
or orbicular, coarsely toothed, both surfaces rough with short scabrid hairs, 
dull-green. Flowers handsome, 3-lin. long, orange with red stripes ; 
peduncles slender, 4-l}in. long. Capsule 4-4in. long, included within 
the persistent calyx.— Raoul Choiw (1846) 44; Hook. f. Fl. Nov. Zel. i 
(1853) 186; Handb. N.Z. Fl. (1864) 221; OC. B. Clarke mm DC. Monog. 
Phan. v (1883) 166, t. 17; Cheesem. Man. N.Z. Fl. (1906) 562; Ill. N.Z. 
Fl. ii (1914) t. 160. R. scabrosus Steud. Nom. ed. 2, uu, 443. Columnea 
scabrosa Sol. ex DC. Prodr. ix (1845) 277. 
Norra Istanp: Lowland districts from the North Cape southwards to Wellington, 
but rare and local to the south of the Auckland Province. Sea-level to 2000 ft. 
Watuatua ; Matata. Flowers most of the year. ~ 
For an account of the fertilization, see a paper by Mr. Petrie in Trans. N.Z. Inst. 
xxxv (1903) 321. 
Family XCV. LENTIBULARIACEAE. 
Herbs, either aquatic or growing in wet soil. Leaves in the terrestrial 
species radical, few or rosulate, entire; in the aquatic species more or 
less scattered, capillary and multifid. Flowers irregular, hermaphrodite, 
either solitary or several on a scapiform peduncle. Calyx inferior, 
2-lipped or 4-5-partite. Corolla gamopetalous, hypogynous, irregular, the 
tube usually produced mto a spur or pouch, the limb 2-lipped, upper lip 
entire or 2-lobed, lower lip 3-5-lobed. Stamens 2, inserted at the base 
of the corolla-tube; filaments usually broad, arched; anthers 1-celled. 
Ovary superior, globose, 1-celled ; style short and thick; stigma 2-lobed ; 
ovules numerous, on a free central placenta. Fruit a capsule, either 
bursting irregularly or 2-4-valved. Seeds numerous, small; albumen 
wanting ; embryo either undivided or with very short cotyledons. 
A small but very distinct family, comprising 5 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. 
UTRICULARIA Linn. /73 5 
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 220. 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 specimuns. 
