KEY TO PLATE LXIV 



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No. i. Peilitory-of-the- 



(Parietaria ramifl&ra, Mcench = 

 offidnalis, I,.)- 



a, Male flower, showing 4-partite perianth 

 wiih 4 stamens, with jointed filaments, 

 and reversed anthers. />, Pistil, with long 

 hairy ovary, and tassel-like stigmas and 

 short style. , Fruit, one -seeded. </, 

 Upper part of plant, wjth alternate, 3- 

 nerved, lance-shaped leaves, flowers in 

 /O-, clusters in cyme. 



CJ 'C>-v 









No. 2. Silky Wind Grass 



7^ - . 



a, Pistil, with globose ovary and feathery 

 stigma scales below. , Spikclct, with 

 empty glumes, awned hairy flowering 

 glume, palea, and 3 stamens. <-, Flower, 

 with palea, flowering glume, stamens and 

 stigmas just protruding, awn of flowering 

 nme nearly terminal. d, Rootstock, 

 ping, with tufted erect stems, rlat 

 *', Flowering stem with stem- 

 sheathing and particle with whorled 

 branches. 



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No, 4. Flat-stalked Poa 

 (Poa compressa.) L.) 



, Lodicules, swollen below. 

 b, Flower, with palea, 3 

 stamens, pistil wixh feathery 

 stigma, and awnless flower- 

 ing glume, r, Spikelet, with 

 empty g.ume s , enclosing 

 parts in b. d, Stem, de- 

 cumbent below, with roots, 

 leaves, with broad sheaths, 

 short ligule. e, Flowering: 

 stem, with leaf, and flowers 

 in! 'branched panicle. 



No. 3. Silvery Hair 

 (Aim caryopjiyll&a, L.) 



a, Flower, with palea, awned 

 flowering glume, 3 stamens, 

 ' and pistil with round ovary 

 and feathery stigmas. 0, 

 Ovary and stigmas with lodi- 

 cules. c, Empty glumes, 

 and pedicel </, Plant, with 

 stem bent below, branched, 

 with leaves, with sheath, long 

 ligule, panicles spreading. 



No. 5. Sand Fescue 

 (Fes t 'uca Myuros, L.) 



, Lower empty glumes. t>, 

 Pistil, with scales, long ovary, 

 and stigmas wit^j 2 styles 

 c, Flower, with awned flower 

 ing glume, paleay 3 stamen? 

 and pistil, d, Spikelet, with 

 awned flowering gljunes, and 

 shorter empty gliomes. e, 

 Flowering stem, iwith upj>er 

 most stdita-leaf, and flowers 

 in panicle, f, Stem, with 

 and upper stem-leaves 



