268 AMERICAN MIDLAND NATURAIJST 



staminibus cxscrtis inaequalibus; Stylo circa 7 mm. cxserto: 

 ovario subcylindrico circa 4 mm. longo. 



Plant not much branched about 3 dm. high or smaller from 

 a rather thick more or le.ss upright woody root sending from the 

 base of the stem rather thick woody rootstocks. Stems several 

 to many and with the branches 4-angled and wings running 

 down from each side of the insertion of the strictly sessile leaves. 

 Foliage and especially the stems very pale. Leaves somewhat 

 glaucous oval to oblong .linear or linear abruptly acute or ob- 

 tusish, base strictly sessile cordate to roimded, some of those on 

 the lower part of the plant at times somewhat cuneate and obovate, 

 and even higher on the stem with noticeable cuspidate stipular 

 terminations of the wings of the stem at the leaf insertion. Leaves, 

 thick about 5x9 mm. to 7x18 mm., the floral ones smaller mostly 

 alternate and with cordate or rounded base and rough margins, 

 the midrib of all very pale. Flowers about i cm. wide; petals 

 obovate, of the same color as those of L. alatinn mucronate tipped; 

 calyx about 6 mm. long its teeth obtuse somewhat membranous; 

 appendages short triangular somewhat spreading calyx tube 

 cylindrical apparently narrowed below the teeth: stamens ex- 

 serted unequal. Style with hemispherical stigma exserted about 

 7 mm. Ovary subcylindric extending about 2-3 the height of the 

 hypanthium. Flowers short-stalked with two minute oval pointed 

 bractlets at the base of the hypanthium. 



As type may be selected No. 442510 of the U. vS. National 

 Herbarium, i. e. S. M. Tracey's 8071 from Abilene, Texas, 

 collected May 24, 1902. The plant is labeled L. ovalifolium but 

 it differs from this with which it was long confounded by winged 

 stem and cordate leaves absent in typical specimens of Gray's 

 plant. No. 265839 of the U. vS. National Herbarium collected at 

 Ulysses, Kansas, by C. H. Thompson (his no. 34) may be referred 

 here. The plant is marked L. alatnm which it in no way resembles. 

 No. 10 of G. C. Nealy collected June, 1892, at Corpus Christi, 

 Texas, is another good example, 1)ut a rather small form scarcely 

 branched at all except the upright branches from the creeping 

 or prostrate stems or rhizomes. 



Lythrum flagellare Shuttleworth ms.' also Koehne, Engler's 



I The name L. flagellare Shuttleworth, at least in as far as it is different 

 from L. ovalifolinm Kngelm., was cither never published or is a notuen nudum. 

 When first used in print as above noted by Koehne it was used as a synonym 



