28 Floristik, Geographie, Systematik etc. 



than O. alia Griff, and therefore more easily broken down. O. laxi- 

 flora (Loma Alta, Texas), more closely related to 0. cyanella Griff., 

 from which it differs very decidedly in laxness, shape, and tint of 

 flovver, color, shape, and character of joints and nature of spination. 

 O. suniensis (Zuni, New Mexico), belongs to the Phaeacantha group 

 and differs from previously described species in shape of joints, 

 color of, as well as appendages of, the joints, and nature of flower, 

 fruit and seed. O. flexospina (Laredo, Texas), is rather easily reco- 

 gnized in vegetative condition by the nature of its spines. 0. ctirvo- 

 spina (PI. 2, Nipton, California; and Searchlight, Nevada), closely 

 related to O. chlorotica Engelm. et Bigel (PI. 3), but it is a larger, 

 more robust plant throughout and possesses ver}'' different spination. 

 O. seniispinosa (San Pedro,i California) interesting inasmuch as it 

 often has many joints or portions of joints practically destitute of 

 spines, while neighboring areoles are normally spiny. It is related 

 with O. occidentalis Engelm. et Bigel. and with O. /^Y/^ora/zs (Engelm.) 

 B. et R. O. pyrocarpa (Marble Falls. Texas), delimited by its large, 

 broad, stipitate joints, long pyriform fruits, large flowers with broad- 

 pointed petals. O. squavrosa (Delta of the Rio Grande. Mexico, easily 

 distinguished from other Delta species by its blue green color, 

 brown spicules and spines, and large, striking flowers. O. ajiaJma- 

 cejisis (near iVnahuac, Texas), characterized b}^ its glossy yel- 

 lowish green coloration and size and shape of its fruit. 



The descriptions are published in english only. Most of the 

 plants have been growing in the author's coUections. Jongmans. 



Pilger, R. und K. Krause. Die natürlichen Pflanzenfami- 

 lien. Ergänzungsheft. III. (3. Lfrg. p. 193—288. ill u. 4, Lfrg. 

 p. 289—381. ill. 80. Leipzig, W. Engelmann. 1915.) 



Diese Nachträge befassen sich mit den Vitaceae, Tüiaceae , Mal- 

 vaceae, Bomhaceae, StercuUaceae (neue Gruppe Hnaeae: mit Hua 

 Pierre), Scytopetalaceae, Dilleniaceae, Ochnacene, Theaceae, Guttife- 

 rae, Dipterocarpaceae, Tamaricaceae , Wiiiterav.aceae , Violaceae. Dann 

 folgen die Nachträge zum Teil III. Abt. 6, enthaltend die Flacour- 

 tiaceae, Caricaceae, Loasaceae, Begoriiaceae, Datiscaceae, Cactaceae 

 (bearb. von F. Vaupel, das System der Cereeti wird nach Berger 

 entworfen), Thymelcicaceae , Elaeagnaceae. Die Nachträge zu Teil 

 III. Abt. 7 umfassen: Lythraceae, Rhisophoraceae , Nyssaceae, Alan- 

 giaceae, Cornbretnceae, Myvtaceae, 3Ielastomataceae, Onagraceae . Ha- 

 lorrhagidaceae. Nachträge zu Teil III. Abt. 8: Araliaceae (die Neu- 

 einteilung nach R. Viguier wird entworfen), JJnihelliferae :bearb. 

 von H. Wolff; mit Neugruppierungen, Einteilung der Gattung 

 Didisciis DC. nach Do min); Gattungen Langlassea Wolff und Har- 

 parella Rose sind von unsicherer Stellung. Cormaceae (Einteilungen 

 nach Wanger in bezw. Nakai). Nachträge zu Teil IV. Abt. 1: 

 Pirolaceae, Ericaceae (Wilson 's Gliederung des Genus Etikianthus\ 

 Hörold's Gliederung der amerikanischen Gattungen der Vaccinioi- 

 deae-Thibatidieae) , Diapensiaceae , Myrsinaceae, Priniulaceae (System 

 nach F. Pax und R. Knuth, Gliederung der Gattung PwwM/a nach 

 Pax, neue Einteilungen bei Androsace, LysUnachia, Anagallis., 

 Phimbaginaceae , Sapotaceae, Ebeiiaceae, Symplocaceae, Styracaceae 

 (Gliederungen nach Perkins), Oleaceae, Loganiaceae,Gentianaceae, 

 Apocynaceae (Gliederung der Gattung Mascarenhasia DC), Asclepia- 

 daceae. Nachträge zu Teil IV. Abt. 3a: Convolvulaceae , Polenionia- 



