Old. 3.] TRIANDRIA MONOGYNIA. 1 1 



52. BRoMUS. Cor. avvned at the back, cloven, concave ; inner 



valve flat, 2-ribbed, bristly at the ribs. Seed elliptic-oblong, 



united to the inner valve. 

 54. AVeNA. Cor. awned at the back, cloven, nearly cylindrical ; 



inner valve flat, ovate. Seed elliptic-oblong, united to the hard 



outer valve. 



56. AIluNDO. Cor. surrounded with long, permanent hairs. 



Florets 1 or many. 



**** Fl. aggregate, on a jointed, or toothed, common stalk, with 

 lateral excavations. 



57. LoLIUM. Cal. of 1 principal valve, opposite to the stalk, 



fixed, many-flowered. 



58. ROTTBoLLIA. Cal. of 2 parallel, sometimes combined, 



valves, opposite to the stalk, imperfectly 2-flovvered. 



61. TRlTICUM. Cal. of 2 transverse, opposite valves, solitary, 



many-flowered. 



59. ELYMUS. Cal. of 2 parallel valves, aggregate, with 2 or 



more florets. 



60. HoRDEUM. Cal. of 2 parallel valves, aggregate, ternate, 



with one floret. Central flower only perfect. 



Order III. TRIGYNTA. Styles 3. 



62. MONTI A. Cal. of 2 leaves. Cor. of 1 petal. Caps, with 



3 valves, and 3 seeds. — N.O. Portulace^e. 

 64. POLYCaRPON. Cal. of 5 leaves. Pet. 5, nearly entire. 

 Caps, with 3 valves, and many seeds. — N.O. Paronychie,*:. 



63. HOLoSTEUM. Cal. of 5 leaves. Pet. 5, jagged. Caps. 



with 6 teeth, and many seeds. — N.O. Caryophylle.e. 

 Tillcea 1. Stellaria 2. 



TRIANDRIA MONOGYNIA. 



* Fl. superior. 

 17. VALERIANA. Valerian. 



1. V. rubra, 22. 1531. (Red V.) Flowers with one stamen, and a 



long spur. Leaves ovate-lanceolate, nearly entire. 

 Chalk pits and old walls. If. . 6—9. Fl. slender, red. 



2. V. dioica, 9. 628. (Small Marsh V.) Flowers with three stamens, 



dioecious. Stem-leaves pinnatifid ; radical ones ovate. 

 Marshes. 11. 6. Fl. palefles/i-coloured. A span high. 



3. V. officinalis, 10. 698. (Great Wild V.) Flowers with three sta- 



mens. Leaves all pinnate ; leaflets lanceolate, nearly uniform. 

 Marsh, and on mount. 2£ . 6. 3/. Fl. flesh-coloured. 

 4.V. pi/rendica, 23. 1591. (Heart-leaved V.) Stamens three. Stem- 

 leaves heart-shaped, serrated, stalked ; the uppermost pinnate. 

 Scot, woods. 14. 6. About 3f. Fl. rose-coloured. Not wild. 



