34 INDEX TO AMERICAN BOTANICAL LITERATURE 
Loeb, J. The law controlling the quantity of regeneration in the stem 
of Bryophyllum calycinum. “ses Gen. Physiol. 1: 81-96. f. I-5. 
S 1918 
Machidane: J. M. Synchronism in plant structures. Brooklyn Bot. 
Gard. Mem. 1: 313-326. 6 Jl 1918. 
Marsh, C. D., Clawson, A. B., & Marsh, H. Larkspur or “poison 
weed.” U.S. Dept. Agr. Farm. Bull. 988: 1-15. f. 1-6. Jl 1918. 
Marsh, C. D., Clawson, A. B., & Marsh, H. Stagger grass ( Chro- 
sperma muscaetoxicum) as a poisonous plant. U.S. Dept. Agr. 
Bull. 710: 1-14. f. 1-8. 13S 1918. 
Maxon, W. R. Further notes on Pellaea. Am. Fern Jour. 8: 89-94. 
S 1918. 
Merrill, E. D. New plants from Sorsogon Province, Luzor, Philip. 
Jour. Sci. rz: (Bot.) 1-35. Ja 1916. 
Forty new species in various genera are described. 
Merrill, E. D. The systematic position of the “rain tree,” Pitheco- 
lobium Saman. Jour. Washington Acad. Sci. 6: 42-48. 19 Ja 1916. 
Metcalf, H. The problem of the imported plant disease as illustrated 
by the white pine blister rust. Brooklyn Bot. Gard. Mem. 1: 327~ 
333. pl. 6,7. 6 Jl 1918 
Moore, G. T. Eras notes—III. A wood-destroying alga, Go- 
montia lignicola, n. sp. Ann. Missouri Bot. Gard. 5: 211-222. pl. 
£S*78. : AC A IOTR, 
Mottet, S. Les Garrya. Rev. Hort. 90: 152. 16S 1918. [Illust.] 
Murrill, W. A. The rosy-spored agarics of North America. Brooklyn 
Bot. Gard. Mem. 1: 334-336. 6 Jl 1918. 
Myers, C. E. Study of the inheritance of size and productiveness in 
pedigreed strains of tomatoes. Proc. Soc. Hort. Sci. 1914: 26-33. 
Mr 1915. 
Nieuwland, J. A. “Fairy circles.” Am. Mid. Nat. 5: 230, 231. -$ 
1918. 
Nieuwland, J. A. Heterothrix (B. L. Robins.) Rydb. a synonym, and 
other notes. Am. Mid. Nat. 5: 224, 225. S$ 1918 
Nieuwland, J. A. Teratological notes. Am. Mid. ‘Nee Sr oaar,  S 
1918. ; 
Olive, E. W. The cytological structure of Botryorhiza he eto 
Brooklyn Bot. Gard. Mem. 1: 337-341. fl. 8 6fir 
Osterhout, W. J. V. A method of oo EY fol os 
Physiol. 1: be Bt i... S tds 
