225 DICOTYLEDO>;S.— CONVOLVULACEiE. Ciiscida. 



leaves linear-lanceolate hispid, flowers in lateral spikes, sta- 

 mens longer than the cor. p. 70. — Corn-Jields and ivabte places. 



Order XXIII. CONVOLVULACE.E. Juss, 



Cal. 5-partite, persistent. Cor. nionopetalous, hypogynous, de- 

 ciduous, with a regular 5-lobed, often plaited limb. Stam. 

 5, inserted into the base of the cor., and alternate with its seg- 

 ments. Ovary simple, 2 — 4-celIed, rarely nearly 1 -celled; 

 sometimes 2 — 4-parted, surrounded with an hypogynous disk. 

 Ovules definite, erect. Style usually divided at the top, some- 

 times almost to the base. Stigmas obtuse or acute. Caps. 

 1 — 4-celIed ; valves with their margins opposite the angles of 

 the free dissepiment, which bears its seeds at its base; some- 

 times not opening, or splitting transversely. Embryo curved 

 and surrounded with mucilaginous albumen. Cotyledoiis wrin- 

 kled. Radicle inferior. 



Herbs or Slmibs usually climbing and lactescent. Leaves al- 

 ternate with stipules. Flowers axillary or terminal. Br. 



1. CONVOLVULUS. Jucq. Br. 

 Cal. 5-partite, naked or imbricated with 2 smaller bracteas. 

 Cor. campanulate, with 5 plaits. Stam. shorter than the limb. 

 Oyar?y 2 -celled (rarely 3 ?) ; cells 2-seeded. iS^?//e undivided. 

 Stigmas 2, filiform. Caps, valved. Br. 



1. C. arvensis, stem climbing, leaves sagittate, their lobes acute, 

 peduncles mostly 1-flowered, bracteas minute remote from the 

 flower, p. 73. — Fields. 



2. C. Sepinm, stem climbing, leaves sagittate, the lobes trun- 

 cate, ])eduncles 4-sided single-flowered, bracteas large heart- 

 shaped close to the flower, p. 74. — Hedges. 



3. C. Solda7iella, stem prostrate, leaves reniform fleshy, pedun- 

 cles I -flowered 4-sided, their angles winged, p. 74. — Sandy 

 sea-shores. 



2. CUSCUTA. 



Cal. 5-, rarely 4 cleft. Cor. globcso-urceolate; limb 4 — 5-cleft, 

 marcescent. Ovary 2 ceWs; cells 2- seeded. Capsule 2 -cel- 

 led, opening all round transversely. Embryo spiral. 



Leafless Herbs climbing, parasitic. 



1. C. e7/rop^fl, flowers sessile, cor. 4 — 5-cleft without any scale 

 at the base of the stam., stigmas simple, p. 86. — On net lies f 

 ^c, parasitic. 



2. C. Epitlujmum, flowers sessile, cor. mostlv 4-cleft, with a 

 small fringed scale at the base of each stam., stigmas simple, 

 p. 86. — Oil furze, ^c, parasitic. 



