38 Systematik (Phj'äiologie, Biologie, Anatomie u. Morphologie). 



•Sectio XXX 11. Aristatae Carey. 



Wie vorige Sectio. Parenchym der KlüxoDirinde sternförmig. 

 C. Siegertiana Uechtr., C. riparia Curt. 



Sectio XXXIII. Vesicariae Fr. 



Der öfters sehr stark sklerotische Zellenring ist entweder direct subcpidermal 

 oder darch eine durchwandigere Zellenreihe von der Epidermis getrennt. Endo- 

 derroiszellen auf den Radial- und Centralwänden sehr verdickt. 



C. Qrayi Host., C. hyslericina Mhlbg., C. rhynckophysa Mey., C. acutiformifr 

 £hrh. und var. b) Kochiana DC, C. Inpulina Mhlbg., C. squarroaa L., O. aaxa- 

 tilis L., C. tentaculata Mhlbg., C. rotundata Whlbg., ^. rostrala Witt., O. folli- 

 culata L., C. Pseudo-C'yperiis L., <J. longirostris Torr., (!. atenolepis Torr., C. vesi- 

 caria L., C. alpigena Fr. 



E. Korh (Halle a. S.). 



Trelease, William, Nortpi American Rhamnaceae. (The Trans- 

 actions of the Academy of sciences ot St. Loui.s. Vol. V. 1892, 

 p. 358—374.) 



Nach Trelease ist folgende Eintheilung zu verwenden: 



Tribe I. Zizypheae. Lobes of the calyx decidous (except in some species 

 of Condalia) ; disk lining the shallow calyx-tube, nearly or quite free from th» 

 ovary ; fruit mostly fleshy and edible with a single 1 to 4 alled stone enclosiug^ 

 a« many seeds or 1 seedad by abortion. 



Embryo relatively large ; albumen not ruminated. 



— A Single ovule to each carpel. 



t Apetalous. 



1. Condalia. Style somewhat 2 or 3 lobed. 



(\ obovata Hook., gpathulata Gray, Mexicana Schi., ferrea Grsb. 



tt Petals present. 



2. Zizyphus. Petals cucuUate and clawed ; style bitid, tlowers umbellately 

 clustered. 



Z. obtuaifolia Gray, lycioides Gray, Parryi Torrey. 



3. Microrhamnus. Petals cucullate and clawed; style notched; flowers soli- 

 tary, leave.s minute, revolute to the broad midrib. 



M. ericoides Gray. 



4. Berchemia. Petals clawless, acute, with iucurv-ed margins, style slightly 



2 lobed. 



B. volubilis DC. 



— — Two ovules to each carpel. 



5. Karicinski.a. Petals cucullate , very short clawed, style slightly 2 or 



3 lobed. 



K. Humboldtiana Zucc. 

 tt Embryo small in the center of copious ruminated albunieu. 



6. Meynosia. Apetalous; style somewhat 2 lobed. 

 jB, latifolia Griseb. 



Tribe II. Rhanmeae. Lobes of calyx decidous (except in Sageretia and 

 one species of Colubrina) the mostly shallow tube lined by the disk, or both 

 »dberent to the lower half of the ovary; fruit drupaceous or dry, enclosing 2 to 4 

 nntlets or cocci. 



t Fruit fleshy, free from the cal.yx. 



7. Rhamnus. Tube of calyx rather deep ; petals small and clawless, some- 

 times wanting; style notched; cocci sometimes perforate at hase ; usu- 

 ally tardily dehiscent. 



R. crocea Nutt., cathart.ica L., lanceolaia Pursh., alnifoJia L'H^r., Garo- 

 liniana Walt., Purshiana DC, Californica Esch. 



8. Sageretia. Calyx shallow , petals cucullate and clawed ; style 1 hört,, 

 3 lobed. 



S. Miehauxn Brongn., Wrightn Watsou. 



tt Fruit dry or nearly 30, partly inferior. 



