INTRODUCTION TO BOTANY. : 55 
Acute-angled, acui@ angulatus. When it has angles 
which are acute. Hypericum quadrangulare, Lathyrus 
pratensis. 
Three-sided, irigonus. When it has three faces, and of 
course three corners. Carex acuta, Scirpus sylvaticus. 
Four-sided, tetragonus. When it has four sides. Mentha 
sativa, Lamium album, and other labiatez. 
Five-sided, pentagonus. Cactus pentagonus. 
Six-sided, hexagonus. Cactus hexagonus. 
Three-cornered, triangularis. 
Four-cornered, guadrangularis: and so onwards. 
Three-edged, triqueter. 
Four-edged, ¢etraqueter : and so onwards. 
- Angular, angulosus. When the angles are not, or can 
not be counted. Polygonatum vulgare, Solanum nigrum, 
Achillea millefolia. 
Jointed, articulatus. Formed of joints connected endways 
with each other, with or without knots. Fucus articulatus, 
Equisetum, Viscum album, Graminez. 
Knotted, nodosus. Having swellings or knots at certain 
distances. Many of the graminez, Persicaria acris. 
Kneed, geniculatus. Jointed and bent at each joint. 
Alopecurus geniculatus, Geranium sanguineum, Stellaria’ 
media, Spergula arvensis. 
Stipiform, stipiformis. Stem of a dicotyledon plant, 
growing like those of palm-trees; with a bunch of leaves 
at top, and bearing the marks where the old leaves have 
fallen off: Statice fasciculata, Brassica oleracea capitata. 
6. Strength and thickness. 
Stiff, Caulis rigidus, strictus, rigens. Straight, not easily 
bent, although it be slender. Bistorta major. Bupleurum 
rotundifolium. 
Brittle, fragilis. Stiff, and breaking as soon as it is at- 
tempted to be bent. Sonchus oleraceus, Geranium Ro- 
bertianum. 
Sarmentose, sarmentosus. Woody, and climbing or 
rampant. Hedera communis, Vitis vinifera, Rubus fru- 
ticosus. 
Weak, debilis. Too feeble to keep upright. Ivasekia 
alpina, Geranium lucidum, Sedum dasyphyllum. 
Slender, gracilis. Long in comparison with its thick- 
ness. Orchis maculata, Stellaria holostea. 
Threadshaped, jfiliformis. Zanichella palustris, Hydro- 
cotyle vulgaris. 
Hairlike, capillaris. Eleocharis acicularis. 
