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R0SACE2E. (ROSE FAMILY.) 
Suborder II. ROSACE AS proper. 
Calyx free from the ovaries, but sometimes inclosing them in its 
tube. Pistils few-many (occasionally single). 
Tribe 1. SPIR^E^E. — Pistils mostly 5, forming few-seeded folli¬ 
cles in fruit: styles terminal. 
3. Spir^a. Calyx 5-cleft. Petals obovate, equal. 
4. Gillenia. Calyx elongated, 5-toothed. Petals slender, unequal. 
Tribe 2. DR YADEA2. — Pistils numerous (rarely 1 - 2), forming 
seed-like achenia or little drupes in fruit. Calyx-tube dry in 
fruit; the lobes commonly valvate in the bud. 
Subtribe 1. Sanguisorbea:. — Calyx-tube constricted at the throat. 
Petals often wanting. Stamens 4-15. Pistils 1-4, dry in 
fruit, inclosed in the calyx. 
5. Agrimonia. Petals 5. Stamens 12-15. Pistils 2. 
6. Sanguisorba. Petals none. Stamens 4. Pistil 1: style terminal. 
7. Alchemilla. Petals none. Stamens and pistils 1-4: style lateral. 
Subtribe 2. Chamarhodea. — Calyx open. Stamens and pistils 
5 - 10: styles lateral. Fruit dry achenia. 
8. Sibbaldia. Stamens 5, alternate with the minute petals. 
Subtribe 3. Eudryadea.— Calyx open. Stamens and pistils nu¬ 
merous. Fruit of dry achenia, tipped with terminal styles. 
Seed erect. (Radicle inferior.) 
9. Dryas. Calyx 8-9-parted. Petals 8-9. Styles persistent. 
10. Geum. Calyx 5-cleft. Achenia numerous : styles persistent. 
11. Waldsteinia. Calyx 5-cleft. Achenia few : styles deciduous. 
Subtnbe 4. Fragarieje. — Calyx open and flattish, bracteolate. 
Stamens and pistils numerous : styles often lateral, deciduous. 
Fruit of dry achenia. Seed suspended or ascending, inserted 
next the base of the style. (Radicle always superior.) 
12. Potentilla. Receptacle flattish, dry. Petals deciduous, obo¬ 
vate or obcordate. 
13. Comarum. Receptacle convex, spongy. Petals acute, somewhat 
persistent. 
14. Fragaria. Receptacle enlarged and juicy in fruit, edible. 
Subtribe 5. DALiBARDEiE. — Calyx open, not bracteolate. Sta¬ 
mens and usually the pistils numerous : styles terminal, decid¬ 
uous. Achenia mostly fleshy or becoming little drupes. Seed 
suspended (ovules 2, collateral : radicle superior). 
15. Dalibarda. Fruit of 5- 10 almost dry cartilaginous achenia. 
16. Rubus. Fruit of numerous (rarely few) pulpy drupaceous ache- 
nia, aggregated on a conical or elongated receptacle. 
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