CLASS I. 
INDIVIDUAL ABSOLUTE TERMS. 
449 
arc of a circle; as the fruit of Astragalus hamosus, Medicago 
falcata, &c. 
36. Scimitar-shaped (acinaciformis) ; curved, fleshy, plane on the 
two sides, the concave border thick, the convex border thin ; 
as the leaves of Mesembryanthemum acinaciforme. 
37. Axe-shaped (dolahriformis) \ fleshy, nearly straight, some- 
what terete at the base, compressed towards the upper end ; 
one border thick and straight, the other enlarged, convex, 
and thin ; as the leaves of Mesembryanthemum dolabri- 
forme. 
38. Falcate {falcatus)\ plane and curved, with parallel edges, 
like the blade of a reaper’s sickle ; as the pod of Medicago 
falcata : any degree of curvature, with parallel edges, re- 
ceives this name. 
39. Tongue-shaped (linguiformis) ; long, fleshy, plano-convex, 
obtuse ; as the leaves of Sempervivum tectorum, and some 
Aloes. 
40. Angular {angulosus) ; having projecting longitudinal angles. 
We say obtuse-angled when the angles are rounded, as in the 
stem of Salvia pratensis ; and acute-angled when they are 
sharp, as in many Carices. Some call these angles the acies, 
41. Three-cornered ; having three longitudinal angles 
and three plane faces ; as the stem of Carex acuta. 
42. Three-edged {triangularis^ triqueter) ; having three acute 
angles with concave faces, as the stems of many plants ; 
generally used as a synonyme of trigonus. 
43. Two-edged {anceps) ; compressed, with two sharp edges ; as 
the stem of an Iris. 
44. Keeled {carinatus) ; formed in the manner of the keel of 
a boat ; that is to say, with a sharp projecting ridge, aris- 
ing from a flat or concave central rib ; as the glumes of 
Grasses. 
45. Channelled {canaliculatus) \ long and concave, so as to re- 
semble a gutter or channel ; as the leaves of Lygeum Spar- 
turn, Tradescantia virginica, &c. 
46. Boat-shaped {cymhiformis, navicidaris) ; having the figure of 
a boat in miniature ; that is to say, concave, tapering to each 
end, with a keel externally ; as the glumes of Phalaris cana- 
riensis ; scarcely different from 44. 
47. Whip-shaped {Jiagelliformis) ; long, taper, and supple, like 
the thong of a whip ; as the stem of Vinca, and of many 
plants. This term is confined to stems and roots. 
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