31 



20. Greggia campomm Gray. Clienate Mountains (Presidio county). This species 



is remarkably variable, a fact which is better known in herbaria than in pub- 

 lication. Very little seems to have been added to Gray's origimil description 

 in Fl. Wrif/ht., i. 8, but the immaturity of his specimens prevented him from 

 discovering certain characters whicli seem generic. No mention is made of 

 the fact, nor does it appear in the plate in Fl. rFru/ lit., that the mature 

 stamens are strongly sagittate and coiled, as in Tkelypodiiim. The pod, in- 

 stead of being short and allied to that of Synthlipsm, is a silique (a fact 

 recognized by Bentham & Hooker), often quite elongated (an inch or more), 

 and usually more or l<;ss curved at maturity. In fact, the persistent septum 

 is always curved, often strongly so. The sepals also become strongly re- 

 flexed. The species G. campomm presents such great variations in the size 

 and shape of its leaves that extreme forms are never recognized by a collector 

 as forms of the same species. These specimens from the Chenato Mountains 

 liave broad and sinuate-dentate leaves, the leaves being sometimes an inch 

 broad and so deeply sinuate-dentate as to appear almost piunatifld. 



21. Greggia camporum Gray, var. angustifolia Coulter, v. var. Leaves mostly 



entire (occasionally sinnate-tootluHl) and very narrow (bnt2 to 4"'"' broad).— 

 Camp Charlotte (Ixion county). If certain intermediate forms were not 

 common this variety would represent a fairly good species. The pods are 

 also quite variable in lengtli in the same specimen. Considering the great 

 variability of the leaves and pods the following may be but another variety 

 of this polymorphous species: 



22. Greggia linearifolia Watson. Camp Charlotte (Ixion county), mixed with the 



last, to which it is closely related. 



23. Lepidium alyssoides Gray. Camp Charlotte (Ixion connty). 



24. Synthlipsis Berlaiidieri Gray, var. hispida Watson. Brazos Santiago. 



25. Cakile maritima Scop., var. cequalis (.Jhapman. Brazos Santiago. A West 



Indian and Floridian s]>ecies found along the Texan coast. 



26. Polanisia trachysperma Torr. «fc Gray. Corpus Christi. Ballinger (Runnels 



county) and Limpia canon (Presidio county). 



27. lonidium polygalaefolium Vent. Kunui (Starr county). 



28. Polygala alba Nutt. Jirazos Santiago an<l Chenato Mountains (Presidio 



connty). 



29. Polygala ovalifolia DC. Western Texas. 



30. Polygala puberula Gray. Santa Anna (Coleman county). 



31. Silene laciniata Cav., var. Greggli Watson. Limpia canon (Presidio <!ounty). 



32. Stellaria prostrata Baldw. Santa Maria (Cameron county) and Chenate 



Mountains (Presidio county). The Chenate specimens are unich smaller 

 than usual. 



33. Talinum parviflorum Nutt. Corpus Christi. 



33a. Talinum lineare I IBK. { T, anraviiacum Eu<^*^lm.) Corpus Christi. 



34. Malva boreali-s Wulita. lirazos Santiago. An Old World plant, a]>parently 



naturalized throughout our southern border from the'Gulf coast of Texas to 

 California. 



35. Calllrrhoe liueariloba (hay. Pena (Duval county). 



36. Malvastrum coccineum Gray. Kio Grande City (Starr county). 



37. Malvastrum spicatum Gray. Brazos Santiago. A Mexican species. 



38. Malvastrum tricuspidatum Gray. Brazos Santiago. Specimens smaller in 



all dimensions than usual. 



39. Malvastrum Wrightii Gray. Corpus Christi. A very small form, with un- 



usually reduced bractlets. 



40. Anoda hastata Cav. " Screw Bean " (Presidio county). 



41. Anoda peiitaschista Gniy. Chenate Mountains (Presidio county). The lower 



leaves are rather larj^^er than usual, some of them being broadly trianguljif 



