Convolvulus.| XC. CONVOLVULACEH (BAKER AND RENDLE), 89 
Species about 150, in the temperate and subtropical regions of both hemispheres ; 
rarer in the tropics, 
** XEROPHYT#.—Small perennial undershrubs with slender branches rising 
more or less erect from the woody rootstock, or spreading; cauline leaves very small ; 
Howers not in involucrate heads. 
Branches erect, spinescent at the tip. 
Corolla several times longer than the calyx, 9 lin, 
Hong; 1. C. sericophyllus. 
Corolla but little longer than the calyx barely 
6 lin. long . . 2. OC. Hystriz. 
Branches bearing short spiny branchlets . . - 3. C, Ruspolii. 
Branches not spiny. 
Flowers very laxly arranged on filiform almost 
leafless shoots : . 4. C. Hildebrandtii. 
Flowers 1-3 together, gubpedatiod in on iat eae 
Cauline leaves less than 6 lin. long : . 5. C. microphyllus. 
Cauline leaves more than 6 lin. long. . 6. C. pluricaulis, 
Flowers few on conspicuous pedicels. c 7. C. Deserti. 
* Caprrare.—Annual or perennial herbs ; stems more or less erect, prostrate or 
es: ; flowers aggregated in sessile or ake, involucrate, generally densely 
hairy heads. 
Heads sessile or shortly stalked. 
Corolla about twice as long as the calyx. 
Leaves linear-cblong to oval, }—1 in. long . + 8. GC. littoralis. 
Leaves subspathulate with cordate or subhastate 
base, 3 in. long . : : . 9. C, subspathulatus. 
Leaves oblong or oblanceolate, 1—2 in. long . 10. C. rhyniospermus, 
Corolla scarcely exceeding the calyx. 
Seeds puberulous. : ; : . 11. C. capituliferus. 
Seeds papillose- ibereae te : . . 12. C. hamphilahensis. 
Heads conspicuously stalked, subtended by a pair of 
leafy bracts. ’ . 13. C. glomeratus. 
*** ARVENSES.—Her pacogun or shrabby baie. rarely palteatiooss - ; stems slender 
prostrate, or more often twining, at any rate at the ends; flowers solitary in the 
Jeaf-axils or in slender-stalked few: flowered cymes ; bracts generally very small. 
Suffruticose ; stems erect, covered with sed silky 
pubescence , - . 14. C. Randii. 
Herbaceous or shrubby ; stems prostrate or climbing, 
rarely ascending (not silvery). 
Leaves lanceolate, acute; flowers minute (corolla 
3 lin. long) . . 15. C. agrestis, 
Leaves oblong with entire base : : : . 16. C. angolensis. 
Leaves sagittate. 
Sepals crisped . : : : - : . 17. C. ulosepalus. 
Sepals not crisped . rae Ua teat OF sagittatus. 
Leaves ovate with small source beast guile . 19. C. huillensis. 
Leaves ovate with hastate buse. 
Corolla 4 times as long as calyx 
Corolla scarcely twice aslong as calyx. 
Leaves cordate-ovate. ; 
Stems climbing ; leaves shallowly crenate . . 22. C. farinosus. 
Stems diffuse ; leaves deeply crenate. “ . 23. C. fatmensis, 
IKK A NOMALE. — Climber with long-stalked ovate-cordate leaves and large 
ite enus) fl ted in bracteate heads on long peduncles. 
ete) fer oo . or : A . 24, CO. Kilimandschari. 
eS Os O. aroeneee: 
. 21. C. Schweinfurthit. 
(for 
