98 ROSACEAE. 
Exocuorpa. Pearl Bush. 
(Family Rosaceae). 
Shrubs with exfoliating brown 
bark: deciduous. Twigs round, 
ran slender, brown, glabrous, rough- 
ened by lenticels and longitudinal 
fissures: pith small, continuous, 
pale. Buds moderate, solitary, 
sessile, ovoid, with about 10 more 
or less pointed and fringed scales. 
Leaf-scars alternate, clustered 
above, narrowly and shallowly U- 
shaped or linear, somewhat raised: 
bundle-traces 3: stipule-scars lack- 
ing. 
Winter-characters of EL. Alberti 
are pictured by Schneider, f. 138. 
; Noting that the bud-scales of 
0) Exochorda are 3-toothed at tip, 
— 
Sir John Lubbock, the most emin- 
ent amateur naturalist of our day, 
took the view that each scale may 
perhaps represent a _ petiole-base 
with adnate stipules, although distinguishable stipules do not 
accompany many of the developed leaves. 
Lubbock’s many and carefully made observations on the 
buds of a great variety of plants were published first in the 
botanical section of the Journal of the Linnean Society— 
Exchorda being noted on p. 494 of the thirtieth volume of 
this series. They subsequently formed the foundation for a 
convenient and very instructive volume On Buds and 
Stipules. 
Fruit depressed, short (7-8 mm. long). (1). E. grandiflora. 
Fruit obovoid, longer (12 mm.). (2). E. Alberti. | 
