1334 LIST OF GENERA AND SPECIES 



Chamaesyce stictospora (Engelm.) Small. Euplorbia stictospora Engelm. 



Chamaesyce stictospora Guadalupensis Small. Euphorbia stictospora var. Texensis Millsp., 

 not E. Texana Boiss. 



Chamaesyce adenoptera (Bertol. ) Small. Euphorbia adenoptera Bertol. 



Chamaesyce pilulifera (L. ) Small. Euphorbia pilulifera L. 



Chamaesyce pilulifera procumbens (Boiss.) Small. Euphorbia pilulifera var. procumbent 

 Boiss. 



ZYGOPHYLLIDIUM Small. Euphorbia, subgenus Zygophyllidium Boiss. 



Zygophyllidium hexagonum (Nutt.) Small. Euphorbia hexagona Nutt. 



Tithymalopsis polyphylla (Engelm. ) Small. Euphorbia, polyphylla Engelm. 



Tithymalopsis Ipecacuanhae (L. ) Small. Euphorbia Ipecacuanhae L. 



Tithymalopsis gracilis ( Ell. ) Small. Euphorbia gracilis Ell. 



Tithymalopsis eriogonoides Small. Euphorbia eriogonoides Small. 



Tithymalopsis mercurialina (Michx.) Small. Euphorbia mercurialina Michx. 



Tithymalopsis Curtisii (Engelm.) Small. Euphorbia Curtwii Engelm. 



Tithymalopsis exserta Small. Type, Coast of West Fla., Chapman, in Herb. C. U. 



Tithymalopsis Joorii (Norton) Small. Euphorbia coroUata var. Joorii Norton. 



Tithymalopsis zinniiflora Small. Euphorbia zinniiftora Small. 



Tithymalopsis apocynifolia Small. Euphorbia apocynifolia Small. 



Tithymalopsis discoidalis (Chapm. ) Small. Euphorbia discoidalis Chapm. 



Tithymalopsis olivacea Small. Euphorbia olivacea Small. 



Tithymalopsis corollata ( L. ) Small. Euphorbia coroUata L. 



Tithymalopsis paniculata (Ell.) Small. Euphorbia paniculata Ell. 



Tithymalus sphaerospermus (Shuttlw.) Small. Euphorbia sphaerospenna Shuttlw. 



Tithymalus inundatus (Torr. ) Small. Euphorbia inundata Torr. 



Tithymalus telephioides (Chapm. ") Small. Euphorbia telephioides Chapm. 



Tithymalus Darlingtonii (A. Gray) Small. Euphorbia Darlingtonii A. Gray. 



Tithymalus Helleri (Millsp.) Small. Euphorbia HeUeri Millsp. 



Tithymalus longicuris (Scneele) Small. Euphorbia lonyicuns Scheele. 



Tithymalus commutatus erectus (Norton) Small. Euphorbia commutata var. erecta Norton. 



Tithymalus austrinus Small. Type, Walton Co., Fla., Curtiss, 1885, in Herb. N. Y. B. G. 



Tithymalus Peplidion (Engelm. ) Small. Euphorbia Peplidion Engelm. 



Tithymalus tetraporus (Engelm.) Small. Euphorbia tetrapora Engelm. 



Tithymalus Roemerianus (Scheele) Small. Euphorbia Roemeriana Scheele. 



Tithymalus Missouriensis (Norton) Small. Euphorbia Arkansana var. Missouriensis Nor- 

 ton. 



Tithymalus leiococcus (Engelm. ) Small. Euphorbia dictyosperma leiococca Engelm. 



Poinsettia cuphosperma (Boiss. ) Small. Euphorbia cuphospenna Boiss. 



Poinsettia dentata (Michx.) Small. Euphorbia dentata Michx. 



Poinsettia barbellata (Engelm.) Small. Euphorbia barbellata Engelm. 



Poinsettia geniculata (Ortega) Small. Euphorbia geniculata Ortega. 



Poinsettia Havanensis ( Willd. ) Small. Euphorbia Havanensis Willd. 



Poinsettia heterophylla (L.) Small. Euphorbia heterophylla L. 



Metopium Metopium (L. ) Small. Rhus Metopium L. 



Khus rhomboidea Small. Type, Helkr, PI. So. Tex., no. 1670, in Herb. C. U. 



Schmaltzia trilobata ( Nutt. ) Small. Rhus trUobata Nutt. 



Schmaltzia microphylla (Engelm. ) Small. Rhus microphylla Engelra. 



Schmaltzia lanceolata (A. Gray) Small. Rhus copallina var. lanceolata A. Gray. 



Schmaltzia copallina (L. ) Small. Rhus copallina L. 



Schmaltzia obtusifolia Small. Type, jVas/i, PI. Cent. Penins. Fla., no. 1659, in Herb. C. U. 



Schmaltzia virens (Lindh. ) Small. Rhusvirens Lindh. 



Schmaltzia hirta (L. ) Small. Rhus hirta L. 



Schmaltzia glabra (L.) Small. Rhus glabra L. 



Schmaltzia Ashei Small. Rhus Caroliniana Ashe, not Mill. 



Schmaltzia Michauxii (Sargent) Small. Rhus Michauxii Sargent. 



Crossopetalum Floridanum Gardner. Type, Pine Key, Fla., Blvdgett, in Herb. C. U. 



Crossopetalum austrinum Gardner. Type, Key West, Fla., Blodgett, in Herb. C. U. 



Rulac Texana (Pax) Small. Acer Negundo var. Texana Pax. 



Ceanothus pubescens (T. & G. ) Rydb. Ceanothus ovatus var. pubescens T. & G. 



Colubrina colubrina (L. ) Small. Rhamnus colubrina L. 



Yitis Helleri (Bailey) Small. Viti* cordifolia var. Helleri Bailey. 



Vitis austrina Small. Vitis cinerea var. F/oridana Munson, not V. Floridana Raf. 



Vitis Linsecomii lactea Small. Vitis Linsecomii var. glauca Munson, not V. glauca Wight 

 & Arn. 



Vitis rufomentosa Small. Type, Nash, PI. Cent. Penins. Fla., no. 525, in Herb. C. U. 



