312 ORDER L. — ONAGRACE^. 



Genus VI.— LAGERSTRCEMIA. L. 

 (In honor of the Marquis Lagerstrcem, a Swedish traveler.) 



Calyx 6-parted, with the bracts at the base. Petals 6, un- 

 guiculate. Stamens numerous. Capsule 3 — 6-celled. 



1. L. In'dica, (L.) a shrub, branches somewhat 4-'winged. Leaves 

 opposite, entire, roundish-ovate, obtuse, shining on the upper surface. 

 Panicle terminal, many-flowered. Petals curled, on long claws. — Pur- 

 ple. ^. China and Japan. An ornamental shrub. 6 — 12 feet. 



Order XLVIIL— RIIIZOPHORA'CE^. 



Sejmls united into a 4 or many lobed calyx. Petals inserted 

 into the calyx and equahng the number of lobes. Stamens 

 equal to, or several times the number of petals. Ovary united 

 to the tube of the calyx, 1 — 2-celled. Fruit 1-celled, indehis- 

 cent. Seed solitary, pendulous. 



Genus L— RHIZOPH'ORA. L. 12—1. 



(From the Greek rhiza, a root, and phoreo, to bear, from the branches throwing out 



roots.) 



Tube of the calyx obovate. Petals oblong, emarginate, co- 

 riaceous. Stamens twice as many as the petals. Anthers 

 nearly sessile. Fruit ovate, longer than the tube of the calyx, 

 to which it adheres. Trees. 



1. R. Man'gle, (L.) Leaves obovate-oblong. Peduncles 2 — 3 flow- 

 ered, axillary. — Yellow. ^ . Lou. and Flor. Mujigrove. 



Order L.— ONAGRA'CE^. 



Sepals united into a tubular calyx, the limb generally divided 

 mto 4 segments. Petals equal in number to the segments, 

 sometimes wanting. Stamens inserted with the petals, and 

 generally equaling them in number. Anthers introrse. Pollen 

 triangular. Ovary cohering with the tube of the calyx, 1 — 2 

 — 4-celled. Style elongated. Stic/ma capitate or 4-lobed. 

 Fruit usually capsular. Seeds indefinite, anatropous ; albumen 

 none ; embryo straight. 



ANALYSIS. 



1. Calyx with 4 or more teeth or lobes 2 



Calyx with 3 lobes Pi^oserpinaca, 6 



2, Flowers monoecious Myriophyllum, 7 



Flowers perfect 3 



8. Stamens 4 Zudwigia, 5 



Stamens more than 4 4 



4. Flowers purple E2nlobium, 1 



Flowers white or reddish Gaxira, 3 



Flowers yellow 5 



6. Caly.x tube prolonged beyond the ovary (Enothera, 2 



Calyx tube not prolonged beyond the ovary Jusaicea, 4 



