LYTHRACE-fi 59 



2. D. Anglica, Hudson. Leaf-blade cnneate: petals much exceeding the sepal*. 



LYTHRACEJE. 



Calyx slightly 4-angled, short: petals none: capsule globular 1 



Petals 4: capsule striate under microscope, splitting into 3 or 4 valves. 9 



Calyx cylindrical, striate, 4 to 7 teeth with smaller ones between: petals 4 to 7 (usually 

 6): stamens as many or twice as many: capsule 2-celled. .... 3 



1. ATVnVTANIA, Linnaeus. 

 1. A. latifolia, L. Stems square: leaves opposite, eared at base, slender, 



2. BOTALA, Kcehne. 

 1. K. ramosior, Kceh. Capsule not bursting irregularly. 



3. LYTHBUM, Linnaeus. 



1. L. hyssopifolia, L Petals very small: stamens usually 4 to 6, included. 



2. L. album, HBK. Calyx 3 or 4 lines long. 



3. I*. Califomicum, Watson. Calyx 6 to 9 lines long: rose-purple petals longer, 



HALORAGE^E. 



Leaves linear or broader in whorls of 4 to 12: flowers sessile, axillary ....,.,. 1 



Leaves in whorls of 3 or 4 y mostly pinnate, segments filiform: flowers axillary 2 



1. HIPPURIS, Linnaeus. 

 1. iL vulgaris, L. Style filiform, stamen 1: calyx globular, limb entire. In ponds. 



2. MYKIOPHYLLTJM, Linnaeus. 



1. M. spicatum; L. Stamens 8: flowers spicate: petals ovate, greenish. 



2. M. hippurioides, Xutt. Stamens 4: petals white, obovate: toothed bracts 3 to 5 

 lines long. Both species aquatic. 



ONAGRACE^). 



Cdtyxdivided to the ovary, lobes persistent: aquatic or creeping manh herbs: solitary ftown 



in axils of entire leaves. 

 Petals 4 to 6, yellow: stamens 8 to 12: leaves alternate 1 



