29. ONAGKACE.E. 143 



1. TAM'ARIX Linn. Tamarisk. 



[1. T. ang'lica (Webb) ; 1. glabrous rather narrowed at the 

 base spurred, fl.-buds ovoid, hypogynous ring with 5 angles 

 narrowed into the filaments of the cordate shortly apiculate 

 anthers, caps, roundish-trigonous at the base abruptly narrowed 

 towards the apex. T. gallica Sm. (T. qallica L. is a Mediter- 

 ranean tree.) E. B. 1318. Webb in Hook. J. of B. iii. 422 1. xv. 

 St. shrubby, with slender leafy branches. L. minute. Spikes 

 lateral, rather panicled, slender. Fl. small, pink. South-west 

 coast of England. Planted. Sh. VII. ] E. 



Order XXIX. ONAGRACEJE. 



Cal. tubular, adnate to the ovary wholly or in part, with 2 4 

 lobes valvate in the bud. Pet. as many as the calyx-lobes, 

 twisted in the bud, inserted at the top of the tube. Starn. 2, 4, 

 or 8, inserted with the petals. Ovary of several cells, with a 

 central placenta. Style 1, filiform, stigma capitate or lobed. 

 Fr. a berry or capsule with 4 cells. Albumen 0. L. alternate 

 or opposite, not dotted. Exstipulate. Many raphides. 



1. EPILOBIUM. Cal. 4-cleft, deciduous. Pet. 4. Stam. 8. 

 Style filiform, stigma clavate or cruciform. Caps, linear, 4- 

 ceiled, 4-valved. Seeds many, bearded. FL not yellow. 



2. CE^OTHERA. Cal. -limb tubular below. Seeds not bearded. 

 In other respects like Epilobium. Pet. yellow. 



3. LUDWIGIA. Limb of the cal. 4-cl eft, persistent. Pet. 4, or 

 in our plant. Stam. 4. Style filiform, deciduous : stigma 

 capitate. Caps, obovate, 4-valved, 4-celled, many-seeded, 

 with aloculicidal dehiscence. 



4. CIRCJEA. Limb of the cal. %-cleft, deciduous, its tube closed 

 by a cupshaped disk. Pet. 2, obcordate. Stam. 2. alternate 

 with the petals. Style simple ; stigma emarginate. Caps. 

 1- or 2-celled, cells 1-seeded, seeds erect. Fl. white. 



1. EPILO'BIUM Linn. l "Willow Herb. 

 % 



A. Fl. irregular, cal. without a free tube, stam. and style, ulti- 

 mately declining, I. scattered. 



1. E. angustifblium (L.) ; st. erect round, 1. lanceolate veined, 





1 In Rev. E. S. Marshall's list of Epilobia in Lond. C.it. ed. 9, p. 20, 

 thirty-three hybrids are reported. See also Mr. Marshall's papers in 

 J. of B. 1890, p. 2, & 1891, p. 7. H. & J. G. 



