ROSK TRIBE 79 



The fruit of the Strawberrj', Raspberry, a,nd Bramble is too well 

 known to need any description, 



3. Dryas (Mountain Avcns). — Calyx in 8-10 equal divisions, 

 which are all in one row ; petals (S-io ; styles finally becoming 

 feathery tails, not hooked at the extremity. (Name from the Greek, 

 drys, an Oak, from a fancied resemblance between the leaves.) 



4. Geum (Avens). — Calyx lo-cleft, in two rows, the outer division 

 smaller ; petals 5 ; styles finally becoming jointed, awns hooked at 

 the extremity. (Name from the Greek, geyo, to taste.) 



5. PoTENTiLLA (Cinquefoil). — Calyx 8 or lo-cleft, in two rows ; 

 petals 4 or 5 : seeds without awns. (Name from the Latin, potens, 

 powerful, from the powerful properties supposed to reside in some 

 species.) 



6. Fragaria (Strawberry). — Calyx lo-cleft, in 2 rows ; the outer 

 divisions smaller ; petals 5 ; seeds without awns, on an enlarged, 

 fleshy receptacle. (Name from the Latin, fragmn, a strawberry, and 

 that from fragrans, fragrant.) 



7. RuBus (Bramble). — Calyx 5-cleft ; petals 5 ; fruit an assem- 

 blage of small drupes, arranged on and round a spongy receptacle. 

 (Name from the Latin, ruber, red.) 



8. Agrimonia (Agrimony). — Calyx 5-cleft, top-shaped, covered 

 with hooked bristles ; petals 5 ; stamens about 15 ; seeds 2, enclosed 

 in the tube of the hardened calyx. (Name of Greek origin.) 



Sub-order IV. — Sanguisorbid.e. — The Burnet Group 



The plants of this group would seem at first sight to be scarcely 

 connected with those already described. It will, however, be found, 

 on close examination, that in many important respects they agree 

 with the characters given in the description of the Order RosACEie, 

 though in others scarcely less important they appear to differ ; 

 these are the absence of petals, and the hardened calyx of the fruit 

 containing i or 2 nut-like seeds. The calyx is 3 to 8-cleft, and the 

 stamens are usually few in number. The plants are either herba- 

 ceous or shrubby, and, like those of the last group, their properties 

 are astringent or tonic. In some species the flowers grow in round 

 or oblong heads. 



9. Alchemilla (Lady's Mantle). — Calyx 8-cleft, in 2 rows, the 

 outer divisions smaller ; petals o ; stamens 1-4, opposite the smaller 

 divisions of the calyx ; seeds I or 2, enclosed in the hardened calyx. 

 (Name from its pretended value in Alchemy.) 



10. Sanguisorba (Burnet). — Calyx 4-cleft, coloured (not green), 

 with 2-4 scale-like bracts at the base ; petals ; stamens 4 ; seeds 



