3i6 



PRIMULACE^ 



base ; corolla yellow, rotate or cup-shape'd ; capsule indehiscent or 

 2 — 5-vahed. 



5. Trientalis. — Leaves cauline ; calyx inferior, 7-partite, or 

 rarely 5 — 9 ; corolla white, rotate, without a tube ; capsule opening 

 with 5-revolute valves. 



6. Glaux. — Leaves cauline ; calyx inferior, belhshaped, 5-lobed, 

 coloured; corolla nhsent ■. capsule 5-valved. 



7. Anagallis. — Leaves cauline; calyx inferior, 5-cleft to the 

 base ; corolla rotate or funnel-shaped, with little or no tube ; 

 filaments hairy ; capsule splitting all round. 



8. Centunculus. — 

 Leaves cauline ; calyx in- 

 ferior, 4 or 5-cleft to the 

 base ; corolla with an in- 

 flated, sub-globose tube, 4 

 Or_ 5-cleft; stamens 4 or 5, 

 with smooth filaments ; 

 capsule splitting all round. 



9. Samolus. — Leaves 

 radical and cauline ; calyx 

 half-superior, 5-cleft, per- 

 sistent ; corolla salver- 

 shaped ; capsule opening 

 with 5 reflexed teeth. 



I. HoTTONiA (Water 

 Violet). — Floating aquatic 

 plants with whorled, finely 

 divided, pinnate, submerged 

 leaves ; flowers whorled, 

 stalked : calyx 5-cleft almost 

 to the base ; corolla salver- 

 shaped, with a short tube ; 

 stamens 5 ; capsule many-seeded, with 5 valves cohering at the 

 top. (Named after Peter Hotton, Professor of Botany at Leyden.) 



1. H. pali'istris (Water A'iolet). — The only British species, ^Yith 

 large, handsome, lilac floivers with a yellow eye, arranged in 

 whorls around a smooth, succulent, leafless stalk, which rises 

 several inches out of the water. — Ponds^ and ditches; local. — Fl. 

 May, June. Perennial. 



2. PKfMULA (Primrose). — Plants with a rhizome, radical, simple 

 ^ffl.7;« and floitiers in umbels willi an involucre: calrx tubular, s- 

 cleft ; corolla salver- or funnel-shaped, Nvith a long, cylindrical 



iiTTCmW rAT.rSTRIS (// ^/cV / w/lO- 



