No. 2, December, 1921] MORPHOLOGY AND TAXONOMY, ALGAE 91 



at first 2 or 3 small crowns of leaves per year, later only 1 crown. On mature plants in the 

 botanic gardens "usually 1 cluster appears every year, whether of (about GO) foliage leaves 

 or (120-170) sporophylls." No male i)lants are known near Lahore, yet ripe ovules, without 

 embryos, occur, possibly due to the influence of foreign pollen from Zamia or Cycas ciranalis. 

 There is a repeatedly dichotomized specimen of C. circinalis in the gardens; this plant tends 

 to produce sporophylls on 1 side only of the growing point ". . . possibly . . . a ten- 

 dency to variation in the position of the female cone from terminal to lateral." The 

 dichotomy is considered to be due to equal growth of lateral buds. — Winfield Dudgeon. 



MORPHOLOGY AND TAXONOMY OF ALGAE 



E. N. Transbau, Editor 

 L. H. Tiffany, Assistant Editor 



(See also in this issue Entries 627, 651) 



583. Attaxgar, M. O. Parthasarathy. Observations on the Volvocaceae of Madras. 

 Jour. Indian Bot. 1: 330-336. 1920. — Rainfall is intermittent, with the principal fall during 

 the winter monsoon, October-December. For 1919 the total rainfall was slightly over 50 

 inches, and the mean temperature ranged from 77.8 to 90.2° F. Volvocaceae are found in 

 various temporary and permanent bodies of water and reach their greatest development during 

 the summer. Of the genera recorded as occurring at INIadras, Chlamydomonas, Carteria, 

 Gonium, Pandorina, and Eudorina are common, while Pleodorina and Volvox are rare. — 

 Winfield Dudgeon. 



584. Conrad, W. Sur un flagelle nouveau a trichocystes, Reckertia sagittifera. [On a 

 new flagellate having trichocysts. Reckertia sagittifera,] Bull. Acad. Roy. Belgique CI. 

 Sci. 1920: 541-553. 4 fis- 1920. — The author describes a new flagellate collected in August, 

 1920, in an aquarium at the Botanical Garden of Brussels. Special consideration is given the 

 origin and development of the trichocysts. — Henri Micheels. 



5S5. CoupiN, Henri. Algae. Album G^n. des Cryptogames Fasc. 23. PL 2H-221. 

 1921. — The present fascicle, like the preceding, consists of 2 parts, one devoted to the algae, 

 the other to the fungi. The material is in the form of black and white plates accompanied 

 by an explanatory legend and numerous bibliographic notes. It is planned to cover in 50 

 fascicles all genera of algae and fungi. The series is edited by the author, 5 rue de la Sant6, 

 Paris xiii, France. — The genera of the following families of Rhodophyceae are covered in 

 the present fascicle: Acrostsdaceae, Gigartinaceae, and portions of Gelidiaceae and Rhodo- 

 phyllidaceae. — J. R. Schramm. 



586. CoupiN, Henri. Algae. Album G^n. des Cryptogames Fasc. 24. PL 222-229. 

 1921. — The present fascicle completes the genera of the Rhodophyllidaceae, covers the genera 

 of the Sphaerococcaceae, and begins the treatment of the Rhodymeniaceae. [See also Bot. 

 Absts. 10, Entry 585]. — /. R. Schramm. 



587. Coupin, Henri. Algae. Album G^n. des Cryptogames Fasc. 25. PL 2S0-2S7 . 

 1921. — The present fascicle completes the treatment of the RhodjTneniaceae and begins the 

 presentation of genera of the Delesseriaceae. [See also Bot. Absts. 10, Entry 585.] — J. R. 

 Schramm. 



5SS. CoupiN, Henri. Algae. Album G^n. des Cryptogames Fasc. 26. PL 2SS-2U. 

 1921. — The author completes the treatment of the Delesseriaceae, presents the family Bonne- 

 maisoniaceae, and begins the consideration of genera of the Rhodomelaceae. [See also 

 Bot. Absts. 10, Entry 5S5.]— J. R. Schramm. 



