Lentibulariacese — Primulaceae. 119 



ORDER 55. — Lentibulariaceae. 



Calyx gamosepalous inferior persistent. Corolla gamopetalous hypogy- 

 nous 2-lipped spurred. Stamens 2 epipetalous. Ovary i -celled. Style ver)- 

 short, stigma 2-Iipped. Fruit a many-seeded capsule, placenta large 

 central. 



Floating plants, Utricularia I, 



Terrestrial plants, Pinguicula II. 



I.—U TRIG ULARIA, 



Floating plants with capillary root-like branches and leaves furnished with 

 floating bladders, corolla personate. Fig. p. 107. 



UTRICULA'RIA VULGA'RIS (82). Common Bladder-wort. 7—8. 

 (1092) Stems 6 — 18 in., leaves numerous much divided, flowers rich yellow, 

 spur half as long as the lip. Pools and ditches. 



UTRICULA'RIA MINOR (68). Lesser Bladder-wort. Stems 3—10 

 (1094) in., leaves small very tine with few forked lobes, flowers pale yellow 

 with hardly any spur. Pools and ditches. 



11.— PINGUICULA, 



PINGUrCULA VULGA'RIS (91). Butterwort. 5—7. Leavesoblong 

 (1097) fleshy with incurved margins all radical arranged in a rosette, flowers 

 purple on single- flowered scapes, corolla ringent. Bogs. 



ORDER 56. — Primulaceae. 



Calyx gamosepalous inferior persistent 5-cleft. Corolla gamopetalous 

 regular of 5 petals. Stamens 5 epipetalous opposite to the segments of 

 the corolla. Ovary i -celled, style I, stigma capitate. Placentation free 

 central. 



Leaves entire, 476 



Leaves pectinate, . . . . ■ , , Hottonia V. 



476 Leaves all radical, ........ Primula I. 



476 Leaves some cauline, 477 



477 Corolla absent, .....,, Glaux IL 



477 Corolla present, 478 



478 Corolla yellow, Lysimachia III. 



478 Corolla red, 479 



478 Corolla white, ........ Samolus VII. 



479 Leaves opposite, Anagallis IV. 



479 Leaves alternate, Centunculus VI. 



