286 RESTIACEAE. (4 | Hypolaena. 
C. lakn.Pous (fOr. ) 4 -v- 
1. H. lateriflora Benth. Fl. Austral. vii (1878) 238.— Stems slender, 
much branched, flexuose and often interlacing, usually from 9-18 in., but 
sometimes forming dense masses 2-3 ft. high. Sheaths 4-3 in. long, closely 
appressed, often ciliate at the mouth, with a short subulate spreading tip. 
Male spikelets 1 or 2 together in the upper sheaths, each spikelet 3-6- 
flowered ; glumes rather thin, rigid, tip acute. Perlanth-segments 6, very 
narrow-linear, acute. Stamens 3; anthers lmear-oblong. Female spikelets 
solitary within the uppermost sheaths, 1—3-flowered. Perianth-segments 
6 or 4, very small, the inner not much longer than the ovary, broadly ovate, 
thin and hyaline. Style-branches 3. Nut broadly ovoid, terete, with a 
thick and swollen base.—Cheesem. Man. N.Z. Fl. (1906) 761. Calorophug 
elongatus Lab. Pl. Nov. Holl. 11 (1806) 78, t. 228 (in part); Hook. f. Fl. Nov. 
Zel. i (1853) 267; Handb. N.Z. Fl. (1864) 297. 
Var. minor Hook. f. Handb. N.Z. Fl. (1864) 297.—Much smaller and more slender, 
sometimes only a few inches high. Male spikelet solitary, 2--3-flowered ; female usually 
1-flowered.—Calorophus minor #7. Nov. Zel. i (1853) 267. 
NorTH AND SoutH Is~tanps, StTEwAaRT Istanp, CHATHAM IsLanDS: The typical 
form not uncommon in lowland swamps in the North Island, from the North Cape 
southwards ; var. minor abundant in mountain districts throughout. Sea-level to 
5500 ft. November—March. 
Also an abundant Australian and Tasmanian plant. The var. minor passes 
insensibly into the ordinary form. 
see PHanfaum. Ig a-p 32 -1AS0- 
Family XVII. CENTROLEPIDACEAE. 
Annual or perennial tufted often moss-like plants, of small size. Leaves 
linear or setaceous, either all radical or densely imbricated on the short 
stems and branches. Flowers very small, usually hermaphrodite, one or 
several within 1-3 bracts, forming little heads or spikelets terminating 
short scapes or peduncles. Bracteoles or glumes under each flower 1-3, 
hyaline, sometimes wanting. Perianth none. Stamens 1-2; filaments 
filiform; anthers versatile, 1-celled. Ovary either l-celled, or with 2-3 
collateral cells, or of 2 or more free or irregularly connate carpels super- 
posed in 2 rows; ovules solitary and pendulous in each cel! or carpel ; styles 
as many as the cells or carpels ; stigmas linear. Fruit small, dry, pericarp 
membranous, the cells or carpels opening extrorsely by a longitudinal slit. 
Seed pendulous or laterally affixed ; albumen farinaceous ; embryo minute. 
A small and inconspicuous order, comprising 4 or 5 genera and about 35 species. 
With the exception of the New Zealand species, one found in China, and one in antarctic 
South America, the order is confined to Australia. It has no properties of importance. 
Flowers crowded in terminal heads enclosed within 2-5 bracts ; heads 
unisexual .. fs 4 “ “ya wr .. 1, HYDATELLA, 
Flowers within 2 alternate bracts, 1-5 within each bract. Stamen 1. 
Ovary of 3 or more carpels superposed in 2 rows (rarely reduced 
to 1) +. - oa “- sk a .. 2, CENTROLEPIS. 
Flowers within 2-3 alternate bracts, 1 or rarely 2 within each bract. 
Stamen 1 to each flower. Ovary of 2 collateral cells or carpels .. 3. GAIMARDIA. 
'. HYDATELLA Diels. 14 6 *r 
Minute tufted and stemless annual herbs. Leaves numerous, all radical, 
filiform. Scapes usually numerous, radical, shorter than the leaves, each 
bearing a terminal head of minute flowers enclosed within 2-5 bracts ; heads 
unisexual. Bracts usually 2 in the Australian species, 3-5 in the New 
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