ERICACEAE. 15 



epigynous. Anthers erect, introrse; the cells partly separate or prolonged at 

 apex into a tip or a tubular appendage, where they open by a pore or chink. 

 Pollen-grams compound, of four united grains. Stigma not indusiate. Seeds 

 with a close and firm coat. — Shrubby or sufFrutescent, with scaly buds : leaves all 

 alternate. 



* Ovary wholly inferior: herbage not aromatic. 

 ^' s^^Ife^n^tlt^^"^- °'''^ ^^"'^^'^' ^^■"^"^^^' ^™* baccate-drupaceous, with 10 



^' Zt(^!S}S^^\ ^^^"^ ^ ""f^^-' °^^^ false-partitions from the back of these ceUs 

 8-10 celled : ovules numerous. Fruit a berry; its cells several-many-seeded 



* * Ovary at first one third to one half superior: herbage aromatic as in Gaultkeria. 

 "• I?tf £gft^lam^n?8T tllrf a^nS, tS^Tar^^^^^^^^^ Corolla short-campanu- 



Suborder II. ERICINE^. Calyz free from the ovary. Corolla gamo- 

 petalous, rarely polypetalous or nearly so, hypogynous. Disk generally annular 

 or 8-10-lobed. Anthers upright, introrse. Pollen-grains compound. Shrubs or 

 small trees. 



Tribe I. ARBUTE^. Fruit fleshy, either baccate or drupaceous. Corolla urceo- 

 late or globular 5-toothed or rarely 4-toothed, deciduous. Stamens twice as many 

 as the corolla lobes, included. Buds scaly. Leaves alternate. 



^' it^^JIJy^l Anthers compressed, bearing a pair of reflexed awns on the back, each 

 cell openmg at the apex anteriorly by a termmal pore. Ovary 5- (rarely 4-) celled rinen 

 ing mto a granular-coated and many-seeded berry; with firm endocarp ' ^ 



5. ARCTOSTAPHYLOS. Ovary 4-10-celled, with solitary ovules in the cells in fruit 

 formmg a drupe with as many seed-like nutlets or a solid stone. 



Tribe II. ANDROMEDE.E. Fruit a loculicidal chiefly 5-celled and many-seeded 

 capsule ; the valves usually bearing the partitions, which separate from the per- 

 sistent placentiferous axis or columella. Corolla gamopetalous, deciduous. Stamens 

 twice the number of the corolla-lobes (mostly 10), more or less included. Leaves 

 mainly alternate. 



* Anther-cells opening through their whole length, not appendaged : stigma 5-lobed • the 

 lobes adnate to a surrounding ring or cup. ' 



6. EPIG^A. Calyx of 5 nearly distinct and strongly imbricated dry and scarious sepals. 

 Corolla salver-form 5-lobed. Stamens 10, mostly equalling the tube of the corolla: fila- 

 ments filiform : anthers hnear-oblong, blunt. 



^ * * Anthers opening only at the top : stigma usually entire. 



-I- Calyx becoming fleshy and baccate in fruit, enclosing the small capsule. 



7. GAULTHERIA. Calyx 5-cleft ; its lobes imbricated. Corolla ovate-urceolate to cam- 

 panulate. btamens 10 : filaments dilated towards the base : capsule deeply umbilicate • 

 placenta ascenduig. 



-1- -J- Calyx unchanged and dry under the capsule. 

 •H- The lobes or sepals valvate or open in the bud, never overlapping. 



8. ANDROMEDA. Corolla from globular-urceolate to cylindraceous, 5-toothed or 5-lobed. 

 Ovary and capsule 5-celled, umbilicate : placenta borne on the summit or middle of the 

 columella ; the seeds pendulous or spreading in all directions. 



++ ++ Sepals or calyx-lobes more or less imbricated, at least in the early bud. 

 = Corolla cylindraceous or conical-urceolate, 5-toothed: anthers fixed toward their base: 

 leaves plane, usually large and broad : capsule not thickened at the dorsal sutures. 



9. OXYDENDRUM. Calyx short, early open, naked at base. Corolla minutely canes- 

 cent. Anthers linear, unappendaged, narrower than the broadly subulate filaments ; the 

 cells opening by a long chink. Capsule ovoid-pyramidal : placenta on the short columella 

 at the base of the cells. Seeds all ascending or erect, scobiform, with loose reticulated 

 coat extended at each end much beyond the linear nucleus. Bracts and bractlets minute 

 and deciduous. 



