34. Lobeliaceous Plants. Lobeliaceae

(178) Lobelia - corolla very irregular, split open on the upper side; anthers closely cohering.

35. Campanulaceous Plants. Campanulaceae

* Corolla cut into deep narrow-linear segments.

(179) Jasione - corolla rotate, with five long linear segments; anthers cohering at their base; capsule two-celled, opening by a large pore at the end.

(180) Phyteuma - corolla rotate, with five long linear segments; anthers free, the filaments dilated at the base; capsule 2-3-celled, bursting at the sides.

** Corolla cut into short broad segments.

(181) Campanula - corolla bell-shaped, tubular, or rotate, with five broad segments; anthers free, the filaments dilated at the base; capsule 3-5-celled, crowned by the calyx-teeth, and opening laterally or at the top.

36. Vacciniaceous Plants. Vacciniaceae

(182) Oxycoccus - corolla very deeply four-cleft, with reflexed segments; berry crowned by the persistent calyx-teeth.

37. Ericaceous Plants. Ericaceae

* Anthers opening by pores.

(183) Erica - calyx four-parted; corolla campanulate or ovate, often ventricose, four-toothed; capsule four-celled.

(184) Pyrola - calyx five-parted; corolla of five petals; capsule five-celled, five-valved.

** Anthers opening by a transverse fissure.

(185) Monotropa - calyx 4-5-parted; corolla of 4-5 petals, each with a hooded nectariferous base; capsule five-celled, five-valved.

38. Primulaceous Plants. Primulaceae

* Ovary superior, † Calyx divided almost to the base; (submerged aquatics with divided leaves.)

(186) Hottonia - calyx five-parted; corolla salver-shaped.

†† Calyx tubular or campanulate; (terrestrial plants with undivided leaves).

Leaves radical.

(187) Primula - calyx tubular; corolla salver-shaped; stamens five; flowers on radical peduncles.

‡‡ Leaves opposite or whorled, cauline.

(188) Lysimachia - calyx five-parted; corolla rotate, with a fiveparted limb; stamens five; capsule opening at top.

(189) Anagallis - calyx five-parted; corolla rotate or funnelshaped, with a five-parted limb; stamens five; capsule opening all round transversely.

** Ovary half superior.

(190) Samolus - calyx five-parted; corolla salver-shaped, the tube short; stamens five; flowers in a terminal raceme.

39. Plumbaginaceous Plants. Plumbaginaceae

(191) Statice - flowers panicled, arranged on one side of the branches in long rows, surrounded by scarious scales.

(192) Armeria - flowers in globular heads, surrounded by a common, imbricated, scarious involucre.

40. Plantaginaceous Plants. Plantaginaceae

(193) Flantago--flowers hermaphrodite, in terminal heads or spikes.

(194) Littorella - -flowers unisexual, solitary or in pairs.

41. Lentibulariaceous Plants. Lentibulariaceae

(195) Pinguicula - calyx 4-5-lobed; leaves entire, radical.

(196) Utricularia - calyx two-lobed; leaves floating, much divided.