2 ANNALS OF THE ROYAL BOTANIC GARDEN, CALCUTTA. 
|. 1- to many-flowered, often long, compressed, the flowers usually all hermaphrodite except 
sometimes the terminal one, often enclosed in bracteate sheaths; empty glumes 2, 
membranous, unequal; flowering glume longer, concave, many-nerved, obtuse, acute or 
mucronate; palea usually shorter than the flowering glume, prominently 2-keeled, usually 
compressed. Lodicules 3, ovate or lanceolate, ciliate. Stamens 3, exceptionally up to 6, 
usually exserted, anthers generally blunt. Ovary globular above, often hairy; style short, 
early dividing into 2 or 3 plumose stigmas. Caryopsis oval or narrowly oblong, smooth, 
furrowed on the back, when ripe included in the persistent glume and palea. 
Distrib.—About 47 to 50 known species, mostly Asiatic, from India, China, and 
Japan, but with about 5 North American (the chief being А. тастозретта, Michaux, of 
the Southern United States, and А. acuminata, Munro, from Mexico); 10 South American, 
and one from South Africa (А. tessellata, Munro) Іп Japan there are some five 
species, chief among which is the A. japonica, Sieb. and Zucc., which is cultivated 
in European gardens and in the Himalaya; and in China there are at least two 
(А. sinica, Hance, and A. Hindsii, Munro). 
Analysis of the species. 
Stamens 3, ereet shrubs. 
Braets of the infloreseence small. 
Inflorescence on leafy branches—Section I. 
Culm-nodes not bearing spines. 
Spikelets many, in large terminal panicles. 
` Leaves large, thick, margins cartilaginous. . . . . . 1. A. Walkeriana. 
Leaves small, thin, margins membranous. 
Spikelets 3- to 5-flowered, flowers blunt . . . . . 2. A. Wightiana. 
Spikelets 5- to 8-flowered, flowers acuminate . . . 8. A. floribunda. 
Spikelets few, in short panicles. 
| ‘Spikelets long, flowers distant. 
Leaves narrow, with transverse veinlets . . . . . 4. А. elegans. 
Leaves rather broad, without transverse yeinlets . . б. A. polystachya. 
eg short, flowers eee Е. бо ados. 
Spikelets racemose. | Е 
Spikelets 1-flowered, leaves very small . . . с... Te A imafia. 
Spikelets many-flowered, leaves moderately w . « « 8, A. racemosa. 
_ Culm-nodes with вршев, о 
Inflorescence terminal, glumes long, mucronate. . . . . . 9. A. Griffithiana. 
Inflorescence axillary, glumes blunt . . . . . | 10. А. callosa. ` 
Inflorescence on separate leafless eulms—Secrion II. 
Leaves with no transverse veinlets, flowers usually 2, fertile. 
Rachilla of upper flower glabrous or шау ge 1b Z ee 
"Rachilla of upper flower white, AME rd el. 135v 40 Җ khasiana, 
Leaves with transverse veinlets apparent when dry. 
Culms small, leaves — leaf-sheaths ciliate, flowers usually T 
3 to 5 fertile , . . 13. А. intermedia, 
: Culms thicker, leaves аа nse, Mates M ciliate, ns 
flowers usually 1 fertile et eee 6 6 vs. V 14, As Hookeriana, | 
