176 PACHYSTIMA CANBYI. — CANBY S MOUNTAIN-LOVER. 



and rooting, if the soil be light, or by sending out roots from 

 branches that find themselves near the ground, or covered by 

 loose vegetable matter. The early spring-shoots have the leaves 

 very variable in form, from linear to ovate, and much more 

 sharply denticulate than those which appear on a second growth 

 of branches, sent out later in the season. It is on these later 

 branches that the flowers appear in the following spring. 



To cultivators the plant will prove very acceptable as an ever- 

 green dwarf bush. In the writer's garden it has a frame, a 

 shallow, bottomless box, a few inches deep, placed around it, 

 filled with sand, into which it seems to love to root. The 

 rooted pieces are easily transplanted to form other colonics. 

 Little pieces of cuttings also root very well in pans of sand, set 

 in an ordinary green-house. 



The fact that a distinct genus like Pachystima should have 

 only two representatives, and these confined to limited areas 

 over this great continent, will be a subject of speculation with 

 those interested in the genesis of plant-forms. Are these species 

 new forms, which have appeared comparatively quite recently, 

 and which by and by will become more numerous by developing 

 into varieties and other species, or are they very old forms, now 

 in process of extinction ? The time may come when there will 

 be circumstantial evidence sufficient to answer these questions, 

 and the earnest attention which they command among scientific 

 men at the present time springs from the belief that it will 

 eventually be possible to answer them satisfactorily. 



Our plant has absolutely no common name, and by way of 

 rectifying this omission we have ventured to call it " Canby's 

 Mountain-Lover," for reasons which must have become apparent 

 to the reader in the course of this article. 



Explanation of the Plate.— 1. Main branch, with secondary brandies, showing the 

 denticulation of the leaves. — 2. Branchlet of the second growth, with entire leaves, in 

 flower ia spring. — 3. Flower magnified, showing the position of the anthers, and the 

 symmetrical arrangement of all the parts. 



