50 



482. Heteranthera limosa Valil. Limpia cafion (Presidio county). 



483 Heteranthera Mexicana Watson. Devil's liiver (Val Verde comity). Tbi» 

 si.edes w;is dis..-ov»-ic(i by Dr. Palmer (no. V.m) in 1871)-'80, in Coahuila, 

 Mexico. Tlio present collection extends its known range into southwesteru 

 Texas. 



484. Commelyna Virginica L. Brazos Sautia<;o. 



485. Tinantia anomala Clarke^ Pciia (Duval county). 



486. Tradescantia leiandra Torr. Linipia canon (Presidio county). Excellent 



siieciinens of this rar<' Texauo-Mexicui species. 



487. Tradescantia leiandra Torr., var. (?) ovata Coulter, n. rar. Like T. hiavdra, 



exiH'pt that the leaves are short and rather broadly ovate (4 to 5"» long, and 

 2 to y.7r>'"' broad.— Clienate Mountains (Presidio County). Insuflicient 

 llowcring material compels the reference ot tliis form as a variety of T. 

 leiandra. 

 The following species of Jiuwus wore determined by Mr. F. V. Coville, and repre- 

 sent .collections" Tnado by Mr. Nealley in 1888 and 1881). It is to be regretted tliat no 

 more speciHc locality than " Western Texas " can bo given for tlio collection of 1888, 

 and hence that general locality is intended when that year is given : 



4S8. Juncus acuminatus Michx. 1888. 



489. Juncus acuminatus Michx., vai-. legitimus Engelm. 1888. 



490. Juncus acuminatus Michx., var. robustus Engelm. 1888. 



491. Juncus brachycarpus Engelm. 1888. 



492. Juncus dicliotomus 1^11. 1888. 



493. Juncus effusus L. 188ri. 



494. Juncus Elliottii Chapman. 1888. 



495. Juncus marginatusKostk. 1888, 



496. Juncus maigiuatus Kostk., var. biflorus Engelm. 1888. 



497. Juncus nodosus L., var. megacephalus Torr. Ballinger (Ruuc'^ls county). 



1889. 



498. Juncus repens Michx. 1888. 



499. Juncus scirpoides Lam., var. macrostemon Engelm. 1888r 



500. Juncus scirpoides Lam., var polycephalus Engelm., forma major and forma 



minor. 1<88«. 



501. Juncus setaceus Kostk. 1888, 



502. Juncus tenuis Wi lid. 1888, 



503. Juncus xiphioides Meyer, var. montauus Engelm. Chenate Mountains (Pre- 



sidio comity). ]8Hi». 



504. Sagittaria variabilis I'.ugeim. Brazos Santiago. 



505. Echinodorus radicans Engelm, Santa Maria (Cameron connty), 



506. Ruppia maritima L. Brazos Santiago. 



The following species of Cijperamv. have been deterniiuod by Mr. F. V, Coville and 

 inclndo Mr. Nealley's collection of 1888 and 188i), The year of collection is indicated 

 with each species. 



507. Cyperus acuminatus Torr. & Hook. In the vicinity of Sabine Pass (Jeifersou 



<Miiu>ty), 1888; Brazos Santiago (CanuTon connty), 1889. 



508. Cyperus aristatus Rottb. Chenate Monntains (Presidio connty), 1889. 



509. Cyperus articulatus L. In the vicinity of Sabine Pass (Jeffer.son county), 



188.-^. 



510. Cyperus Buckleyi Britton, Chenate Mountains (Presidio connty), 1889. 



511. Cyperus compressus L. In the vicinity of Sabine Pass (Jetterson county), 



1888. 

 ' 512. Cyperus cyrtolepis Torr. & Hook. In the vicinity of Sabine Pass (Jefferson 



county), 1888. 



