EPILOBIUM.] ONAGRAFJE^. 157 



5. E. lance ola' turn, Sebast. and Maur. ; finely pubescent, leaves mostly 

 alternate petioled oblong-lanceolate toothedj buds inclined. 



Roadsides and stony places by streams, from Surrey to Cornwall, Monmouth, 

 Gloster ; Channel Islands ; fl. July-Get. Stolons autumnal, with spreadiDg 

 rosulate leaves. Stem 1-3 ft., erect, branched, terete, pubescent, hairs short 

 recurved. Leaves 1^-3 in., lowest opposite, petiole terminating in obscure 

 decurrent lines on the stem. Flowers J in. diam., many, pale rose. Stit/ma- 

 lobes short, spreading. Capsule 2-3 in., finely pubescent. DISTRIB. From 

 Belgium southd., and eastd. to Asia Minor. 



** Stem often more or less 2-4:-angled, or with 2-4 raised lines. Stigma oblique 

 clcwate. 



6. E. ro'seum, Schreb. ; pubescent above, stem with 2 or 4 raised lines, 

 leaves petioled mostly alternate ovate-oblong narrowed above and below 

 toothed glabrous, buds inclined acuminate. 



Copses and moist places, Edinburgh to Kent and Cornwall, local ; rare in the 

 north ; ? Ireland ; fl. July- Aug. Stolons autumnal, with loosely rosulate 

 leaves. Stem 1-2| ft., erect, brittle, much branched. Leaves 1|-2| in. 

 Flowers many, J in", diam., rose-red. Capsule 2-3 in., pubescent. DlSTEIB. 

 Europe, N. and W. Asia, Himalaya, N.W. America. 



7. E. tetrago'num, L. ; pubescent above, stem usually with 2 or 4 raised 

 lines, leaves sessile oblong- or ovate- or linear-lanceolate toothed, buds 

 erect acute. 



Wet places, from the Orkneys southd. ; ascends to 2,100 ft. in the Highlands ; 



Ireland ; Channel Islands ; fl. July- Aug. Stem 1-2 ft., erect, branched, 



rather tough, obtusely angled or with 2 or 4 raised lines or almost terete. 



Leaves 1-3 in., narrow, lower or all below the branches opposite, rarely 



slightly petioled, base decurrent. Flowers J ^ in., erect, rose- lilac. Pods 



2-4 in. DISTRIB. Europe (Arctic), N. and S. temp, zones, Himalaya. 

 E. TETRAGO'NUM proper ; stolons autumnal with rosulate leaves, leaves 



linear-oblong or -lanceolate shining above, capsule 2-4 in. slightly 



incurved. 

 Sub.-sp. E. OBSCu'-RiJM, Schreb. 9 , stolons sestival with few distant pairs of 



opposite leaves, leaves ovate-lanceolate not shining above, capsule 1-2 in. 



suberect or rather spreading. E. viryatum, Gren. and Godr. The most 



common form ; ascends to 1,500 ft. in Derby. 



8. E. palus'tre, L. ; finely pubescent above, stem terete without raised 

 lines, leaves subsessile mostly opposite lanceolate from a cuneate base, 

 buds nodding obtuse, seeds fusiform, testa produced at the tip. 



Bogs and ditches, from Shetland southd. ; ascends to near 2,000 ft. in York- 

 shire ; Ireland ; Channel Islands ; fl. July-Aug. Stolons sestival, sub- 

 terranean, filiform, scaly, bearing in autumn scaly buds. Stem 6-24 in., with 

 often two lines of pubescence. Leaves 1|-2| in., almost all opposite, flaccid, 

 spreadiog, scarcely toothed, tip narrowed but obtuse. Flowers horizontal, 

 | in. diam., rose-lilac. Capsule 2-2^ in., pubescent. Seeds much narrower 

 than in all preceding species, with a distinctly produced testa. DISTRIB. 

 N. temp, and Arctic zones, Himalaya. VAE. lif/ula'ta, Baker, with leaves 

 lanceolate faintly toothed, and seeds shorter, is a hybrid with obscurum. 



