64 FLORA OF NEW ZEALAND. [ Haloragee. 
Stems 1-2 feet long, but always depending on the depth of water, sparingly branched. Leaves all whorled in 
fours; lower 1-2 inches long, capillaceo-multifid; upper crowded, broadly linear-oblong or narrow linear, blunt, 
sharply serrate, or pinnatifid. Flowers axillary. Stamens eight.—This looks entirely the same as a common Tas- 
manian and South American species, and nearly approaches to 24. verticillatum of England. The fruit I have only seen 
on South American specimens, and have described as of four short, oblong, smooth carpels, convex on the back. 
2. Myriophyllum variefolium, Hook. fil.; folis 5-7-natim verticillatis inferioribus capillaceo-multi- 
fidis intermediis pinnatifidis superioribus anguste linearibus obtusis, floribus axillaribus 8-andris dioicis? 
Hook. fil. Le. Plant. t. 289. 
Var. 2; foliis supremis magnis pinnatifidis segmentis capillaceis, carpellis turgidis hic illic tuberculatis. 
An sp.diversaP An M. Indicum, Roxb.? 
Has. Northern and Middle Islands; in bogs and running water, frequent, Colenso, etc. Akaroa, 
Raoul. 
Stems in shallow water a few inches, in deep water several feet long. Leaves five to seven in a whorl; the lower 
capillaceo-multifid ; intermediate smaller, pinnatifid; upper still smaller, narrow linear, blunt, 1—3 inch long, entire. 
Flowers on the summit of the upper branches. Fruit unknown, except in var. 8, which may be another species: there 
of four large, tubercled, short, broadly oblong carpels. The leaves of that variety are much larger, 1-14 inch long, 
all deeply pinnatifid, with capillary segments.— Mr. Colenso sends the male flowers of M. variefolium with var. 8, 
whence I presume them to belong to one species; the latter closely resembles the M. Indicum of India, but the 
fruit is less tubercled ; also the M. heterophyllum of North America, and M. verticillatum of Europe, but the leaves 
of the flowering specimens are always longer than the flowers. It is a very common Tasmanian plant. 
Gen. III. CALLITRICHE, 2. 
Flores unisexuales. Masc. Stamen solitarium, bracteis (petalis?) 2 linearibus suffultum ; filamento 
elongato; anthera 2-loculari; loculis rimis lateralibus demum confluentibus dehiscentibus. Fr. raw. 
Calyx obsoletus. Petala 0. Ovarium tetragonum, 4-loculare. Stigmata 2, filiformia. Fructus 4-coccus ; 
coccis compressis, indehiscentibus, l-locularibus. Semen solitarium, pendulum; embryone axi albuminis 
carnosi, recto; radicula tereti, hilo proxima. 
Very delicate green, smooth, water herbs, partially floating, with opposite, entire leaves, often approximate and 
apparently whorled at the end of the branches, which are spread out on the top of the water, and very minute, 
solitary, sessile, axillary, imperfect, uni- or bi-sexual? flowers. Male flower: as tamen with two membranous bracts 
at the base; filament slender; anther two-celled, bursting inwards longitudinally, and, from the valves becoming 
confluent and rolling up, appearing to have opened transversely. Female: four flat carpels, loosely cohering in the 
form of a cross, and enveloped with the quite inconspicuous tube of the calyx, which has no apparent limb.  S/igmas 
two, long, filiform. Fruit of four, hard, flattened carpels, each one-celled, with one pendulous albuminous seed. Em- 
bryo terete, axile, with two small cotyledons, and radicle pointing to the hilum.—A genus of few species, and those 
variable in characters, like most water-plants ; found all over the temperate world, the New Zealand kind being par- 
ticularly widely diffused. (Name from xaXos, beautiful, and Opué, hair, from the long, floating, slender stems.) 
1. Callitriche verna, L. Fl. Antarct.v. 1. p. 11, et v. 2. p. 272. 
Var. 8; foliis rotundatis petiolatis, floribus hermaphroditis v. 2 and & collateralibus, carpellis dorso 
alatis. C. tenella, Banks et Sol. MSS. 
Has. Abundant in deep, still, and running water; also in pools, and on wet ground, Banks and 
Solander, ete. 
An extremely variable plant. Stems creeping on the ground, or erect in water, branched, 2—10 inches, and even 
in deep water a foot long. Leaves variable in shape according to the situation, shorter and broader in terrestrial 
