1052 
LXXXIV. BOEAGINEiE. 
[ Lithospervmm . 
'Car flat, basal : receptacle nearly flat.- — Herbs or undershrubs, hispid or rough. 
Leaves alternate. Flowers white blue or yellow, axillary, solitary or in terminal 
bracteate racemes. 
The species are met with in Europe, Asia, Africa, aud America. 
1. L. arvense (Corn-field), Linn.: DC. Prod. x. 74. Corn Gromwell. A 
strigose annual weed, 6 to 18in. high, erect. Leaves lanceolate, the lower ones 
petiolate obovate-oblong, stem ones about lin. long, 3 lines broad, the strigose 
hairs often from tubereulate bases. Racemes in fruit more than 4in. long. 
Flowers white, rarely blue. Pedicels short. Corolla 3 lines long, hairy upwards; 
Nuts ovoid-oblong, tubereulate ; sepals in fruit 3 or 4 liues long, hispid. 
Hab : A weed on cultivated land ; not certain if really indigenous. 
Order LXXXV. CONYOLYULACEJE. 
Flowers regular. Calyx free, persistent, of 5 distinct much imbricated sepals, 
rarely united in a 5-toothed or 5-lobed calyx. Corolla campanulate or funnel- 
shaped or rarely rotate or with a cylindrical-tube, the limb usually spreading, 
5-angled or 5-lobed, folded in the bud or very rarely* imbricate. Stamens 5, 
inserted in the tube, alternate with the lobes or angles of the corolla, often of 
unequal length ; anthers versatile or almost erect, with 2 parallel cells opening 
by longitudinal slits. Ovary free, 2, 3 or 4-celled, rarely divided into 2 or 
4 distinct carpels, with 1 or 2 erect or ascending ovules in each cell or carpel or 
1 - celled with 2 or 4 ovules ; style single or more or less divided into 2 entire or 
2- fid branches or styles. Fruit either a capsule opening in 2, 3 or 4 or twice as 
many valves, leaving the dissepiments attached to the axis, or opening transversely, 
or bursting irregularly, or succulent and indehiscent. Seeds with a small 
quantity of mucilaginous albumen or without any ; cotyledons usually very much 
folded, rarely straight or imperceptible.— Herbs, often twining or rarely shrubs, 
woody twiners or even trees, or (in Cuscuta) leafless twining parasites. Leaves 
alternate. Inflorescence various, usually axillary and more or less cymose or 
peduncles 1 -flowered. Bracts and bracteoles usually small or deciduous, rarely 
large and persistent. Flowers often large and showy, rarely very small. 
A considerable Order, widely spread over almost every part of the globe, but most abundant 
in warm countries 
Tribe I Convolvuleae. — Corolla-limb plaited or induplicate in bud. 
* Fruit indehiscent. 
Stigma large, globose, subsessile 1 Ekycibe. 
Ovary 4-celled. Style long. Stigmas 2 2. *Ar<;yrbia. 
Ovary 2-celled. Style long. Stigmas 2 3. Lettsomia. 
** Capsule 2 — 4 -valved, or fragile and breaking up. 
Stigmas 2, globose. 
Filaments linear or dilated near the base 4. Ii>om«ea. 
Filaments with an oblong process near the base -5. Lepistemon. 
Ovary 1 -celled. Stigmas short-oblong. Bracts enclosing the calyx. ... 6. Calysteoia. 
Ovary 2-celled. Style 1. Stigmas short-oblong 7. Convolvulus. 
Stigmatic lobes 4 to 8, or rarely 2. Ovary 2-celled, with 1 ovule in each cell 8. Polymeria. 
Ovary 2-celled Styles 2, each with 2 linear stigmas 9. E volvulus. 
Styles 2, or 1 deeply 2-partite. Stigmas capitate 10. Brkwekia. 
Tribe II. Dichondreae. Corolla plicate or induplicate in the bud. Ovary deeply 
2 — ilobed. 
Corolla-lobes induplicate. Ovary 2-lobed, 2-ovulate 11 Dichonura. 
Tribe III. Cresseae. — Corolla-lobes imbricate in bud. 
Leaves small, sessile. Sepals distinct. Styles 2 12. Cressa 
Tribe IV. Cuscuteae. — Leafless, yellowish, twining parasites. 
Corolla small, campanulate or ovoid 
13. Cuscuta 
