(197.) 
COM ARUM* *. 
Linnean Class and Order. Icosa'ndria f, PolycyNia. 
Natural Order. Rosa'cete, Juss. Gen. PI. p.334. — Sm.G-am. 
of Dot. p. 171. — Lind!. Syn. p. 88.; Introd. to Nat. Syst. of Bot. 
p. 81. — Rich, by Macgilliv. p. 528. — Loud. * lort. Brit. p. 512. — 
Don’s Gen. Syst. of Gard. and Bot. v. ii. p.523. — Rosales; sect. 
Rosinas ; subsect. Rosian.e ; type, Rosace.e : subtype. Frag a- 
RIO E ; Burn. Out. of Bot. v. ii. pp.611, 683, 693, & 700. — Sen- 
ticos/e, Linn. 
Gen. Cmar. Calyx (fig. 1, a.) inferior, of 1 concave, coloured, 
permanent sepal, deeply divided into 10 spreading, pointed seg- 
ments, 5 alternate ones (lig. 2, b) exterior, much smaller than the 
olher (fig. 2, a). Corolla (see fig. 1, b.) of 5 spear-shaped, pointed 
petals, attached to the rim of the calyx, opposite to, and less than, 
its smaller segments. Filaments (see fig. 1, e. & fig. 3.) numerous, 
from the rim of the calyx, awl-shaped, upright, nearly as long as 
the corolla. Anthers roundish, incumbent, deciduous. Germens 
(figs. 4 & 5.) numerous, small, egg-shaped, smooth, collected into 
a head (fig. 4). Styles (see figs. 5 & 6.) lateral. Stiijmas simple. 
Seeds ( carpels of Don, pericarps of Hooker , ) (figs. 5 & 6.) nu- 
merous, egg-shaped, even, seated on a large, dry, spongy, hairy, 
hemispherical, permanent receptacle. 
Distinguished from other genera, in the same class and order, by 
the 10-cleft calyx, the segments of which are alternately smaller ; 
the corolla, of 5 small, spear-shaped petals, less than the calyx ; 
and by the seeds being inserted on a large, spongy, hairy, perma- 
nent receptacle. 
Only one species known. 
CO'MARUM PALU'STRE. Purple Marsh Cinque-foil. Purple 
Marshloeks. Cowberry. 
Spec. Char. 
Engl. Dot. 1. 172.— "Curt. Tirit. Entom. v. xii. t. 558. — Linn. Sp. PI. p. 718. — 
TIuds. FI. Angl. (2nd ed.) p. 227.— Sm. FI. lirit. v.'ii. p. 557. Engl. FI. v. ii. 
p.433. — With. (7tli ed.) v. iii. p.639. — Hook. Hr. FI. p. 251. — Lighlf. FI. Scot, 
v. i. p. 276. — Abb. FI. Bedf. p. 115. — Davies’ Welsh Bot. p. 52. — Port. Midi. 
FI. v. i. p.248. and v. iii. p. 362. — Kelli. FI. Cant. (3rd ed.) p 207. — Hook. FI. 
Scot, p 165. — Grev. FI. F.din. p. 113. — Johnst. FI. of Bervv. v. i. p. 117. — 
Winch’s FI. of Northumb. and Durham, p. 35. — Walk. FI. of Oxf. p. 147. — 
Don’s Gen. Syst. of Gard. and Bot. v ii. p. 562. — Perry’s PI. Varvic. Select, 
p. 45. — Mack. Catal. of PI. of Irel. p.50. — Irish FI. p. 104. — Potentilla Coma- 
rum, Nest. Potent, p 36. — lie (’and. Piod. v. ii. p.533. Bot. Gall. v. i. p. 
171. — Lindl.Syn. p. 97.— Potentilla palustris, Scopoli FI. Cam. (2nd ed.) v. i. 
p.359. — Spiing. Syst. Veg. v. ii. p.536. — P. paluslre, Gray’s Nat. Arr. v. ii. 
p. 580. — Pentaphylloides palustre rubrum, Kay's Syn. p. 256. — Penta- 
phylluin rubrum palustre, Johnson’s Gerarde, p. 987. 
Fig. 1. A Flower ; a. the calyx ; b. the corolla ; c. the stamens; d. the pis- 
tils. — Fig. 2. One-fifth of the Calyx and Corolla, showing the situation of the 
Stamens; a. one of the large segments of the calyx; b. one of the small ones ; 
c. a petal. — Fig. 3. Two of the Stamens. — Fig. 4. A Fruit. — Figs. 5 & 6. Sepa- 
rate Seeds, with their Styles. — Fig. 7. A transverse section of a Seed. — Fig. 8. 
The Embryo. — Figs. 6, 7, & 8, more or less magnified. 
* From Komaros, Gr. an ancient name given by Tiifopiirastus to an ever- 
green tree, and not now rightly understood. Dr. WrmtniNO. 
t See Pi unus uirusus, folio 100, uote f. 
