INTRODUCTION TO BOTANY. 
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Discoid, discoideum. Thick, with two flat parallel faces, 
and a bluntly rounded edge. Dioscorea, Strychnos Nux- 
vomica. 
Flat, planum. Lilium, Tulipa. 
Angular, angulosum. Having prominent corners upon 
its surface. Trasus sylvaticus, Cepa esculenta, Rumex, 
Fagopyrum esculentum, Primula. 
Three-cornered, trigonum , triquetrum. Rumex, Rheum, 
Fagus sylvestris. 
Four-cornered, tetragonum 9 &c. 
Sawdust-like, scobiforme, Fine, long, like sawdust. 
Orchidese, Rhododendron. 
Grooved, canaliculatum. Hollowed out into a gutter 
lengthways. Phaenix dactylifera. 
3. Surface . 
Bald, Semen glabrum. Asparagus officinalis, Nymphsea, 
Brassica, iEsculus Hippocastanum. 
Smooth, Iceve. Nymphaea, iEsculus Hippocastanum. 
Polished, Icevigatum. Geranium Robertianum, G. molle, 
Melampyrum arvense. 
Shining, nitidum 9 lucidum. Polygonum aviculare, Ama- 
ranthus minor, Nymphaea, Linum usitatissimum, Spartium 
scoparium, iEsculus Hippocastanum. 
Streaked, striatum. Lysimachia stellata. 
Furrowed, sulcatum. Digitalis speciosa, Viburnum fa- 
rinosum. 
Networked, reliculatum. Geranium rotundifolium, G. 
dissect um, G. columbinum. 
Wrinkled, rugosum . Damasonium Dalechampii, Aco- 
nitum, Cymbalaria hederacea, Elatine hastata. 
Pitted, scrobiculatum. With irregular pits. Arum Xta- 
licum, Datisca cannabina. 
Honeycombed, alveolatum^faveolatum. With pits, placed 
regularly. Antirrhinum, Papaver. 
Rough, scabrum. Ruta graveolens, Primula veris. 
Dotted, punctatum. Covered either with rising points, 
Cyclamen vernum, Anagallis Phoenicia, Geranium colum- 
binum; or with coloured dots, Clausena. 
Tubercular, tuberculatum. With elevated lumps. Vicia 
lathyroides. 
Warty, carunculatum . With spongy or pulpy excre- 
scences. Chelidonium majus, Ricinus. 
