59^8' 
APPENDIX II. 
tose rhizomes often creeping or slender, sheaths thin elongate 
involucrate, stems quite or for a long distance (sometimes 
densely) pubescent, 1. ahyays narrow ± softly hirsute, sheaths 
densely softly pubesc, spihelets piibesc. or mcberulons. — P. VI. 
VII. Maritime and heathy sands, rarely chalk clififs. E.S.I. 
Page 497. 
1. Poa annua L. ; 1. suddenly contracted at summit, pan.- 
branches spreading or reiiexed after flowering, fl. closely 
imbricate^ lower glumes subcylindric scarcely keeled' on back, 
unopened anthers 2 — 3 times as long as broad. 
lb. P. remotiflora (Hack.) Murb. ; ascending, 1. suddenly 
attenuate at summit, panicle somewhat oval or oblong branches 
not reflexed after flowering, spikelets long-linear, fl. 5 — Q-distant 
or slightly overlapping, lower glumes compressed keeled on back, 
unopened anthers very small about as long as broad. With us 
only the f. exilis (Freyn), dwarf, panicle reduced. — J. of B. liv. 
193, t. 532 : 1914. — Sandy places near the sea, Channel Is. E. 
Page 500. 
12. Poa 2>ratensis L. ; panicle branches usually 3 — 5, glumes 
short bent reaching to middle or upper third of lowest fl. 
126. P. irrigata Lindm. ; stems 15 — 30 (50) cm. few or 
solitary decumbent ascending, I. short broad flat coesious, pan. 
branches usually 2 (3) narrow pyramidal thin with few green- 
or blue-grey or whitish spikelets, glumes long almost sti-aight 
reaching almost to to}> of loivest fl. — Wet places. P. VI. VII. 
E.S. 
Page 534. 
Order CI.* SALVINIACEJE. 
Free-floating plants with leaves in two rows. Fructification 
at base of leaves solitary paired or glomerate, of two kinds ; 
male, globular containing many microsporangia, each containing 
several " massulse " bearing anchor-shaped hairs (" glochidia ") ; 
female, smaller macrosporangia. 
1. AzoLLA. Plant minute. Leaves distichous on back of 
stem, each cut into a dorsal and a ventral segment. 
Macrospores solitary in each macrosporangium. 
1. Azol'la Lam. 
1. A.filiculoides Lam. ; growing in dense tufted masses with 
strong roots, stout much and closely (racemosely) branches 
