TERMINOLOGY? 9i 
63. Three-cornered, (trigonus), when there are 
three round or obtuse edges, but the sides appear 
flat. Of this too there are several kinds: 
a, Four-cornered, (¢etragonus), fig. 29. 
pB. Five-cornered, (pentagonus), 
y. Six-cornered, (hexagonus ). 
§. Many-cornered, ( po/ygonus). 
54. Membranaceous, (membranaccus). When the 
stem is compressed and thin hike a leaf, 
55, Winged, (alatus’, when on both sides of the 
stem there is a membranaceous dilatation, fig. 265. 
56. Knotted, (zodosus), when the stem is divided 
by knobs. _ | 
57. Knotless, (enodis), when it has neither knobs 
nor joints. | 
58. Articulated, ( articulatus), when the stem has 
regular knobs at the joints, as in Cactus, fig. 233. 
59. Jointed, (geniculatus\, when the stem has re- 
gular knobs not seated on the joints. 
g. Difference of Stems in respect of Substance. 
60. Woody, (lignosus), that consists of firm 
wood. 
61, Fibrous, (ibrosus), that consists of woody 
fibres, that can be easily separated. 
62. Herbaceous, (herbaceus), that is weak, and 
can be easily cut. 
63. Fleshy, (carnosus), that is nearly as juicy and 
soft as the flesh of an apple. 
64, Firm, (solidus), internally hard. _, 
65. Empty, (zanis), filled internally with a soft 
pith, 
BS 62, Hol. 
