158 FLORA OF TASMANIA. [ Marsileacee. 
Has. Common in boggy places on the mountains.—(». v.) 
DistriB. Alps of Victoria, New Zealand, Lord Auckland’s Group, etc.; alps of South America to 
Fuegia. 
Stems ereeping, stout, rooting, often 2 feet long, sending out flattened, flabellately-divided, compressed branches. 
Leaves of two kinds; the larger bifarious, decurrent, falcate, ovate-lanceolate, acute or acuminate, laterally flattened, 
very coriaceous; smaller on the under side of the branches only, more numerous, subulate, appressed to the stem. 
Spikes 1-23 inches long, cylindrical, solitary or geminate, on long or short terminal peduncles, which are often 8 
inches long, and covered with imbricate, subulate leaves. Scales somewhat sexfariously disposed, ovate, with rather 
broad recurved points and toothed margins. 
Gen. IV. SELAGINELLA, Beauv. 
Capsule biformes, sessiles, uniloculares ; alise reniformes, rima longitudinali dehiscentes, bivalves, sporis 
minutissimis trigonis linea tricruri notatis replete; alice 2-3-lobse, 2—3-valves, corpusculis 1-6 farcte.— 
Yrondes herbacea, complanate, distiche v. bifariam ramose ; folia quadrifaria, lateralia patula verticalia, 
antica et postica sepe stipuleformia, cauli appressa ; spicis terminalibus, 4-fariis. 
l. Selaginella uliginosa (Spring, Monog. Lycop. ii. 60); caule erecto, ramis erecto-patentibus 
bifariis suboppositis, foliis parvis confertis 4-fariis uniformibus patentibus ovatis acuminatis integerrimis 
subcarinatis basi subtortis, amentis 4-angularibus sessilibus.— Lycopodium uliginosum, Lad. Fl. Nov. Holl. 
ii. 104. £. 251. f. 2; Br. Prodr. 165; Gaud. in Freye. Voy. Bot. 284. (Gunn, 51, 1559.) 
Has. Probably common in marshy places: Hobarton, Georgetown, etc.— (v. v.) 
Distris. New South Wales and Victoria. 
8. uliginosa is a small, distichously or bifariously branched, slender plant, 2-4 inches high, with small quadri- 
farious leaves, those on the upper and under face of the branches appressed, the lateral spreading, all ovate-acu- 
minate, quite entire. Spikes sessile at the apices of the branches, tetragonous.—A very large tropical genus of 
Lycopodiacee, of which no species has hitherto been found in New Zealand, and very few in Australia. 
Gen. V. ISOETES, Z. 
l. Isoetes, sp.? (Gunn, 1563.) 
Has. At the bottom of alpine lakes ; abundant. 
My specimens, being in an immature state and barren, are not capable of satisfactory determination. They 
may belong to Z. lacustris of Europe, a plant of wide distribution, but the leaves are more rigid, short, and blunt. 
—A perennial submerged plant, growing in dense tufts. Leaves narrow-linear or subulate, cellular, 2-6 inches 
long, enlarged at the base where the capsules are inserted. Capsules usually of two kinds, those of the outer leaves 
with large grains cohering originally in fours, those of the inner filled with very minute spores. 
Nar. Orb. III. MARSILEACEA, Br. 
Gen. I. AZOLLA, Lam. 
l. Azolla rubra (Br. Prodr. 167). (Gunn, 438.) 
Has. Floating on the surface of marshes and ponds: Circular Head, etc.— (v. v.) 
Disrris. A native of Australia, Tasmania, New Zealand, South America, and probably many other 
parts of the world. 
A pretty, small water-plant, of a vinous-red or red-purple colour, subtriangular in outline, 1-2 inches long, 
