Nov. io, 1913 Pubescent-Fruited Species of Primus 
171 
it favors seem to be from decomposed granite or mica schist. In washes 
where the sands and silts from these rocks are deep an enormous root 
development is made, the plants forming dense thickets of many sprouts, 
reaching 7 or 8 feet in height. On granitic slopes above the washes the 
plants occasionally grow with a single stem and a miniature tree-like 
form (PI. XIV, fig. 2). The following description of this species is the 
result of examination of many plants in the field and the study of abundant 
herbarium material. 
Prunus fasciculata Gray. (Fig. 6.) 
Emplectocladus fasciculaius Forr., PI, Frdmont, p. io-ii, pj. 5, 1853. 1 
Prunus fasciculata Gray, Proc. of Amer. Acad,, v. 10, p. 70, 187s. 
Amygdalus fasciculata Greene, FI. Franc., pt. 1, p. 49, 1891. 
Ulus., Schneider, C. K., Laubhk., Lfg. 5, p, 598, fig. 335, f f gf h; Forr., loc. cit. 
A much-branched, scarcely thorny shrub, with many small branched stems from 
a common crown or rarely with 
a single stem and short stiff 
branches, usually 1 or 2, rarely 
3 meters high, with stems 6 to 
10 cm. in diameter at the base. 
The bark on young twigs is 
usually puberulous or pubes¬ 
cent, at first pale green, dark¬ 
ening to reddish or silvery 
brown, with conspicuous lenti- 
cels; dark gray brown or nearly 
black on older wood. 
The leaves, conduplicate in 
vernation, 1 2 are borne singly on 
young wood of free growth, but 
are fascicled on short budlike 
suppressed branchlets on older 
growth. They are narrowly 
linear spatulate with a mucro- 
nate apex and cuneate base; 
margin entire or with a few 
fine serrations; blade thin, pale 
green, puberulous above and 
below; 1 to 4 cm. long, 3 to 7 mm. broad; petiole short or wanting; stipules caducous, 
slender, attenuate, minutely glandular. 
The flowers, dioecious by abortion of stamens or pistils, are minute, solitary or 
paired, sessile or very short stalked. In the staminate form the calyx tube, about 3 
mm. long, is obconic campanulate, with blunt triangular teeth; glabrous or faintly 
1 From incomplete material collected by Gen. Fremont this species was made the basis of a new genus 
ky Forrey in 1853, the Latin description of which is rendered in English as follows: 
Emplectocladus n. gen.-Calyx obconical campanulate; tube not at all contracted at the naked throat* 
limb divided into five equal parts, persistent. Petals 5, erect-spreading. Stamens 10 to 13, biserial, pistils 
1 to 2 (generally solitary), unilocular; ovules two, collateral, pendulous. Style very short, thick, slightly 
oblique, stigma capitate. Fruit-. 
California shrub, very much branched; branches rigid, spreading, subspinescent; leaves minute, spatu¬ 
late, Lorn subglobular buds, almost fascicular; stipules minute, deciduous; flowers subsolitary, sessile 
terminal, small. 
2 Only the most careful inspection of very young leaves as they emerge from the bud will discover that 
they are conduplicate. Fhe adhering margins of the linear-spatulate leaves hold them in a tubular form 
as they expand, giving them a rolled appearance which is accented by a slight twist. 
Fig. 6—Prunus fasciculata Gray: A , Section of staminate flower, 
showing abortive ovary and minute hairs on interior of calyx, 
X 3; -S, calyx cup, pistillate form, showing abortive stamens, 
X 3; C, detail of calyx lobe, X 5; A fecundated ovary, X 3; 
E, F,G, fruits, three forms, natural size; H, /, J, seed, dorsal, 
ventral and side views, natural size. 
