Gahnia,} CYPERACEAE, 481 
A genus of 20—30 species, igus over Australia, | eastern tropical Asia, and eos sia 
y nd, N. Caledonia, Viti, Aneiteum, Tahiti, Hawaiian Islds. — The erigonial 
scales, although not mentioned in previous writers, are quite manifest n ap 
nd in avanese species, redu to a single nd probably have been 
overlooked in others. Their shape, however, does not seem io be constant in wit sam 
8 All our species bear a single hermaphrodite flower. 
Glumes glabrous; styl : : 
Achene black; spikelets light brown ‘ 1. G. Gaudichaudii 
Achene pale yellow or strav plese, spikelets dark brown é 2. G. Beecheyi 
Achene red; spikelets almost ble 
é ani oboyate-elongate, trigo onal; Sia ite fusiform . 3. G. Mannii. 
Achen: ms in panicle " com pac et , 4. 
Glumes papeneit ; style 4cl 5. G. leptostachy ya. 
1. G. Gaudichaudii, ey Sy ynops. PL thik: IL 164. — Tufted on a short 
rhizome, the stiff stems 9—18‘, obtusely trigonal, smooth, nodose, with 
3—6 rather distant leaves; the other leaves crowded at the base, multi- 
farious, stiff, erect, as long as the stem or longer, 1—2” broad, generally 
convolute and drawn out into a long filiform point, scabrous, Spikelets 
ovoid-elongate, very acute, 4” long, deep brown, 1-flowered, in clusters 
of 2—5 along the smooth rhachis or short branches of mite Bor 
spikes or spike-like panicles, the lowest of which measur 
2—8’ in length. Bracts and bractlets long-aristate or filiform, exceedin 
their fascicles and spikelets. Glumes 6—7, the lowest half ge length of 
the spikelet, thin, lan spate edie the upper empty one 3!/2“, ovate, 
very acute, conchoid, 1-nerved, with many faint re coriaceous, brown, 
with darker dots; the fertile one enclosing a narrow lanceolate scale o 
less than 1/2 its own length. tamens 3, long-exserted; the anthers 
yellow, linear, very acute. Style brown, long-exserted; deeply trifid with 
simple branches. Achene shining black, thick bony, ovoid, with 3 longi- 
tudinal furrows, 11/2“ long, not ridged inside, suspended within the con- 
volute filaments reget mesper CN — Mann, Enum. no. 524. — Beklr., in 
Linnaea, XXXVIII, 352. — oe Gandichandi Brongn. in Voy. de 
la Cog. p. 166. — vase th, num. Pl. II, — Morelotia gahniaeformis, 
' Gaud, in ee Freye. p. sh tab. 28. — aes quadrangulare, Nees, in 
Linn, IX, 301. 
waii! 88 Lanai! on me —_ mountains from 3000 ft. upward. Nearly related 
to @. affinis, Brongn., from N. 
2. G. Beecheyi, Mann, 2. no. 525. — Stem 2—3 ft. high, terete, 
Smooth, nodose. Leaves much longer, convolute, 3—5“ broad below, 
Tawn out into a very long filiform point, scabrous along es 
Spikelets 1-flowered, 4—5“ long, narro n , rather compressed 
Virgate foliose panicle (interrupted — of 1—1*/2 ft. in length. Bracts 
Hillebrand, Flora of the Hawaiian Islands ee 
