398 Floristik, Geographie, Systematik etc. 



tineae, based on leaf anatomy, — without reference to earlier literature. 



Trelease. 



Shull, C. A., Physiological isolation of types in the 

 genus Xanthhim. (Bot. Gaz. LIX. p. 474-483. f. 1-7. June 1915.) 



Contains as new: Xanthium globosum. Trelease. 



i 



Staadley, O. C, Two plants new to the flora of Louisiana. 

 (Torreya. XV. p. 9-11. f. I.Jan. 1915.) 



Clerodendron Biingei and Epidendrum conopseiint are reported. 



Trelease. 



St, John, H., Elymus arenarius and its American represen' 

 tatives. (Rhodora. XVII. p. 98—103. May 1915.) 



Contains as new: Elytnus arenarius var. compositus [E. arenarius 

 f. compositus Abromeit, and E. strigatus. Trelease. 



St. John, H., Runtex persicarioides and its allies in North 

 America. (Rhodora. XVII. p. 73—83. pl. 113. Apr. 1916.) 



A füll analysis of R. persicarioides (restricted in America to 

 a few localities in Quebec, Prince Edward Island, and Mas- 

 sachusetts); R. maritimus (a bailast introduction about Phila- 

 delphia), its new variety fueginus {R. fueginus Phil.). — The 

 usual plant of the United States, and its variety athrix from 

 Lower Califrnia, Utah, Colorado and Washington. 



Trelease. 



Swingle, W, T. , Merope angulata, a salttolerant plant related 

 to Citrus, from the Malay archipelago. (Journ. Wash. Acad. 

 V. p. 420—425. f. 1—2. June 19, 1915.) 



Referring to the "kigerukkan" of Java, for which Merope an- 

 gulata {Citrus angulata Willd.) is proposed as a new combination. 



Trelease. 



Thellung, A., Ophrys Scolopax Cav. f. chlorosepala Thell. f. nov. 

 (approbante M. Schulze). (Allg. bot. Zeitschr. XX. N» 4. p. 

 61—62. 1914.) 



Diagnosis: perigonii phylla exteriora albo-viridia nee ut in type 

 rosea vel albo-rosea. Mitunter sind die inneren seitlichen Perigon- 

 blätter dreieckig eiförmig, am Grunde stark verbreitert (statt linea- 

 lisch) ausgebildet. Fundort: Bastia auf Korsika. O . fuci flora {Ara- 

 chnites) var. viridis Palanza hat gleichfalls grünliche (statt rosa) 

 Perigonblätter, O. sphegodes {araneifera) var. ambigua Gren. sub 0. 

 aranifera umgekehrt rosa (statt grünliche) äussere Perigonblätter. 

 Man darf also die Farbe der äusseren Perigonblätter nicht als 

 Schlüsselmerkmal zur Unterscheidung der Arten verwenden. 



Matouschek (Wien). 



Tidestrom, I., A new Delphinium from Utah. (Proc. Biol. Soc. 

 Wash. XXVII. p. 61. Mar. 20, 1914.) 



Delphinium abietoriun. Trelease. 



