61 



Neue Pflanzen ans Sokötra, Abdal Knri und Semhah. 



Beschrieben von Dr. Fritz Vierhapper (Wien). 

 IV. 



Euphorbia septe^nstilcata Yierhapper. 

 Sectio Diacnnthlum Boi ssier. 



Rami heptagoni. ca. 18 ram diametro, glabri. angulis 

 parum undulatis et vix spiraliter tortis, obtusis, sectione 

 transversali extus ca. 1'5 — 2"5 mm latis, sulcis acutate canali- 

 culatis, ca. 2mm altis, extus 6 mm latis, lateribus paene 

 planis. Aculei stipulares gemini angulis bifariam insidentes. 

 per paria 5 ram spatio remoti, horizontaliter patentes et 

 inter sese non multum ultra angulum rectum divergentes, modicc 

 curvati, tenues. anguste conici, ca. 3 ram longi. Poda- 

 ria 3 — 4 mm longa, 2 — 3 mm lata, continua, rarius spatio 

 ecalloso brevi sejuncta. Folia in apice tantum praestantia, squa- 

 maeformia, basi parum auriculata. 2'5 mm lata podario 

 insidentia, 0-4mm longa, cicatricem anguste ellipticam 

 r e 1 i n q u e n t i a. 



Cyathia in alis foliorum terna dichasium solitarium subsessile 

 lormantia, folia floraiia ca. l'ö mm longa, comraunia ro- 

 tundato-cyrabiforraia, subintegra, lateralia late elliptica 

 vel rotundato-elliptica, navicularia, in margin e super iore 

 crenato-dentata. Cyathia oblonge cupuliformia, 35 mm 

 longa, intus glabra. lobis germini adpressis rotundatis, 1mm 

 loDgis, in margine superiore ad quartam partem diaraetri 

 crenato-dentatis, incisura media paene bilobis, glandula trans- 

 verse ovaiia, 1*5 mm longa superantibus. Florum masculorura 

 paucorura (5) bracteolae filiforrai-Iaeeratae, 2mm longae, 

 pedicellus 1*4 mm longus. supra medium articulatus, glaber- 

 rimus, anthera globoso-ovoidea, 0'9 nun longa, cyathio inclusa. 

 P'erainei floris pedicellus 2*2 mm longus. perigonium volvam inte- 

 gram lormans, germiui adpressum, 1 mm diametro, germen ovato- 

 ellipsoideum, 1 -ö mm longura, glaberrimum, styli usque ad basin non 

 disjuucli, l-f)mm longi, in apicis modice incrassati et extus curvati 

 superiore parte Stigmata ferentes. Capsula pedicello recurvato omni 

 longo stipifata, ovato-globosa, ca. 4 — 5 mm longa, trisulcata, sicut 

 semina subglobosa, glabcrrrima immalura tantum visa. 



Sokotra. Auf dem Kalkplateau nördlich von Akarhi auf 

 steinig<'n. der Sonne voll ausgesetzten Stellen. ( Alkoliolpiäparat von 

 l'aulav). 31. .liinner 1809. 



iUbfsiits niacrojKHltiH Wagner et Vierhapper. 



(Pa affinitate llibisci atcnanthi lialfour.J 



Frutei 1 — l'5m altus. Kami novelli teretes, glabri, superne 

 scabriuHculi: Kolia Ktipulis subulatis, caducis, petiolo 4— ()-5 mm 



