Puate XXX. 
CONVOLVULUS atruzorpgs, Linn. 
Natural Order ConvoLvULAcEs. 
Section of genus Convolvulus having a twining stem. 
Gen. Cuar.—Corolla campanulate, having 5 angles and 5 folds. 
Style filiform ; stigmas 2. Capsule 2-4-celled, each cell containing 1-2 
seeds. 
Spec. Cuar.—F lowers solitary or in pairs, on long axillary pedun- 
cles; bracts linear, distant from the calyx. ‘‘ Capsule ovoid, glabrous” 
(Gren. et Grodr.). Leaves more or less cordate, entire or variously 
lobed. Stem generally hairy, as is the whole plant ; sometimes scarcely 
twining. 
Convolvulus altheoides, Linn. Sp. Plant, p. 222; Gren. et Godr. ii. 
501; Woods, Tour. Fl. p. 250. 
Hasitat.—Dry banks among the olive terraces. April, May. 
Remarxs.—As far as my observations go, this plant is pretty con- 
stant at Mentone to the form under which I have represented it ; but 
at Cannes it sometimes appears with silky leaves and much smaller 
flowers. This latter form is treated by MM. Grenier and Godron as a 
variety ; but as a species by De Candolle (Fl. Fr. Suppl. p. 423), who 
calls it C. argyreus. Convolvulus altheoides, Linn., has a wide range, 
- and is mentioned by De Candolle (Geog. Bot. i. 409) as reaching from 
Madeira, the Canaries, and Mogador, round the Mediterranean shores 
as far as Egypt and Anatolia, but not growing near the Black Sea or 
Caucasian range. The silky variety mentioned above is cited by Koch 
(Syn. Fl. Germ. et Helv. ii. 429) as growing in Istria, and is called C. 
tenuissimus, Sibth. and Smith (Fl. Grac. Prod. i. 134), a name adopted 
by Woods (Tour. Fl. p. 250), who joins the above-named authors in 
considering it as a species. 
