108 _ Stock and Scion. | [ZOE ) 
Grimmia Donniana Smith. 
Grimmia Montana Br. & Schimp. 
Grimmia Scouleri Miill. 
Racomitrium patens Hiibn. 
Fledwigia ciliata Ehrh., var. leucophea Schimp. 
Orthotrichum sordidum Sull. & Lesq. 
Orthotrichum speciosum Nees. : 
Orthotrichum Texanum Sull. Cascade Range. 
Encalypta vulgaris Hedw. 
Tetraphis pellucida Hedw. Cascade Range. 
Funaria hygrometrica Sibth. 
Bartramia ithyphylla Brid. 
Philonotis fontana Brid. 
Philonotis fontana Brid. var. 
Leplobryum pyriforme Schimp. 
Webera cruda Schimp. 
Webera nutans Hedw. 
Bryum cespiticium L. 
Bryum cirrhatum Hoppe & Hornsch. 
Lryum Hendersoni Ren. & Card. 
Bryum pallens Swz. 
Mnium affine Bland. Cascade Range. 
Mnium punctatum Hedw. 
Timmia megapolitana Hedw. 
Polytrichum piliferum Schreb. Cascade Range. 
Polytrichum juniperinum Willd. Cascade Range. 
Fontinalis Lescurii Sull.? 
Fontinalis Neo-Mexicane Sull. &*Lesq.? : 
THE RECIPROCAL INFLUENCE OF STOCK AND SCION. 
BY GUSTAV EISEN. ich 
The following instances of the influence of stock upon scion, or 
vice versa, have come under my personal observation. They clearly 
show that there exists a strong reciprocal influence between scion _ 
and stock, which, when more fully understood, may be of practical — 
value in the artificial production of new horticultural varieties, 
Some ten years ago I had in my garden a Mandarin orange _ 
tree, budded on sweet California stock. This stock is simply pro- — 
