ON HETEROMORPHIC ORGANS OF SEQUOIA SEM- 

 PERVIRENS ENDL. 



BY ALICE EASTWOOD, 



Curator of. the Herbarium. 



[With Plates xv-xviii.] 



The following investigations were instigated by the 

 discovery of a branch of redwood with foliage so unlike 

 the ordinary form of Sequoia semj)ervireiis that at first it 

 seemed probable that a new variety of Sequoia had been 

 discovered. The trees from which the branch must have 

 fallen grow at the head of Sequoia Canon in Marin 

 County, on the southern side of Mt. Tamalpais, and 

 differ from the trees in the lower part of the canon 

 in a more open straggling habit, a weather-beaten ap- 

 pearance, and a preponderance of branches densely cov- 

 ered with short, stout, closely appressed leaves. 



A careful examination was made of one of the trees, 

 and branches were obtained from both the upper and 

 lower parts. Plate xvi, fig. i, shows a piece from an 

 upper branch with the peculiar foliage; fig. 2, a piece 

 from a lower branch. It will at once be evident that 

 there are two quite different kinds of leaves' on the same 

 tree, the lower being the ordinary redwood foliage with 

 broad distichous leaves, while the upper more nearly re- 

 sembles that of Sequoia gigantea T>Q.c2asr\Q.. Two trees 

 that had been overthrown in a storm in the lower part of 

 the canon showed the same characteristics. 



Dr. Kellogg had noticed the scale-like leaves of Sequoia 

 sempervirens in "Forest Trees of California," published 

 by the State Mining Bureau in 1882, and so had Dr. New- 

 berry in "Pacific Railroad Reports," part iii, p. 58; but 

 neither had thoroughly investigated the matter, nor did 

 they set forth the facts exactly. 



2d Ser., Vol. V. May 13, 1895. 



