LYTHRACEXS 59 
2D. Anglica, Hudson. Leaf-blade cuneate: petals much exceedi _ che sepala, 
LYTHRACE, 
Calyx slightly 4-angled, short: petals none: capsule globular...... .. seeseweesiesepiee a 
Petals 4: capsule striate under microscope, splitting into 3 or 4 valves,........-...08 a 
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...... or eieisieinisplcisie scheesee BS 
1. AMMANTA, Linneus. 
1. A. latifolia, L. Stems square: leaves opposite, eared at base, slender. 
2. ROTALA, Kohne. 
1. B. ramosior, Keh. Capsule not bursting irregularly. 
8. LYTHRUM, Linneus 
I. hyssopifolia, L. Petals very small: stamens usually 4 to 6, included, 
album, HBK. Calyx 3 or 4 lines long. 
L. Californicum, Watson. Calyx 6 to 9 lines long: rose-purple petals longer, 
er 
m 
HALORAGES. 
Leaves linear or broader in whorls of 4 to 12: flowers sessile, axillary........ sevevieos 
Leaves in whorls of 3 or 4, mostly pinnate, segments filiform: flowers axillary........ 2 
1. HIPPURIS, Linnens. 
1. H. vulgaris, L Style filiform, stamen I: calyx globular, limb entire. In ponds, 
2. MYRIOPHYLLUM, Linnaus. 
1. M. spicatum; L. Stamens 8: flowers spicate: petals ovate, greenish. 
2 M. hippurioides, Nutt. Stamens 4: petals white, obovate: toothed bracts 3 to 5 
lines long. Both species aquatic. 
ONAGRACER. 
‘' Calyz divided to the ovary, lobes persistent: aquatic or creeping marsh herba: solitary flowers 
in axils of entire leaves. 
Petals 4 to 6, yellow: stamens 8 to 12: leaves alternate....cceeseeccccccccenccccncoce 1 
