vit] FLORAL CHARACTERS 103 
The four glumes and two stamens distinguish this grass at once. 
Other grasses with occasionally tuft-like inflorescences—e.g. species 
of Agrostis, Gastridium, Atra, Dactylis, Cynosurus, Poa, Triodia, 
Keleria—are distinguished at once by having three stamens 
(Bromus occasionally has but two), only two glumes, several 
flowered spikelets, &c. 
B. Inflorescence a distinctly branched panicle, more 
or less loose and spreading. 
(a) Tall reed-lke perennials, growing in water 
or in marshes, with plume-like inflorescences, 
and silky hairs at the base of the palee. 
Glumes with a keel and point, but not awned. 
(i) Spikelets purplish: outer palea with a slender 
dorsal awn: basal hairs longer than the palee. 
Leaves narrow. Not common. 
Calamagrostis Epigeios, Roth. 
(ii) Spikelets greenish. No awns: basal hairs 
much shorter than the palee. Leaves broad. 
Common. 
Digraphis arundinacea, Trin. 
A variety of Digraphis with white stripes in the leaves is grown 
in gardens. Other aquatic reed-like grasses are Arundo and Glyceria 
aquatica : both have several flowers in the spikelet. 
The rare Calamagrostis lanceolata, Roth., C. stricta, Nutt. and 
C. strigosa, Hartm. also come here. 
(b) Slender grasses, not reed-like, with delicate 
loosely spreading panicles of small spikelets. 
(i) <A tall, slender shade-grass, in woods. Palezx 
very smooth and glistening. Spikelets few, 
distant and turgid, awnless. 
Milium effusum, WL. 
