2 8o APPENDIX. 



SPOTTED ORCHIS. Orchis maculata. 

 CLASS Monocotyledons. Division Petaloideae. 



A glabrous unbranched herb, with sheathing leaves, and a 

 terminal dense spike of pale purple or nearly white blotched 

 irregular flowers. 



ROOT of two fleshy 2- or 3-lobed, flattened, annual tubers, and 

 a few simple fibres. 



STEM erect, succulent, about I foot high, leafy. 



LEAVES radical and cauline, alternate, sheathing, ovate - 

 lanceolate or linear-lanceolate, acute or obtuse, glabrous, usually 

 marked with blackish blotches above. 



FLOWERS hermaphrodite, densely spicate, bracteate ; bracts 

 linear-lanceolate, acute, exceeding or equalling the ovary. 



PERIANTH irregular, superior ; three outer leaves (sepals) 

 oblong-lanceolate, lateral sepals oblique, ascending ; three inner 

 leaves (petals) unequal, lateral petals ovate, obtuse, connivent, 

 lower petal (labellum or lip} 3-lobed, plane or with the margins 

 reflexed, lateral lobes usually larger, crenulate, obtuse, central 

 lobe ovate or oblong, obtuse ; spur slender, rather shorter than 

 the ovary. 



COLUMN short ; anther erect, 2-celled, dehiscing in front, 

 pollen-masses 2, each with a caudicle and distinct gland, the 

 latter embedded in the projecting rostellum. 



OVARY inferior, twisted, I -celled ; stigma concave, immedi- 

 ately beneath the rostellum ; ovules indefinite, parietal, in 3 

 rows. 



FRUIT a capsule, dehiscing in 3 valves cohering at base and 

 apex ; seeds indefinite, minute exalbuminous ; embryo acotyle- 

 donous. 



COMMON WHEAT. Triticum vulgare. 

 CLASS Monocotyledons. Division Glumiferae. 



An annual corn-plant, with erect, distichous, spicate in- 

 florescence. 



ROOT fibrous. 



STEM erect, jointed, terete, striate, glabrous. 



LEAVES cauline, alternate, sheathing, linear, acuminate, striate, 

 slightly scabrous above ; sheath terete, striate, glabrous ; ligule 

 very short, truncate, membrarous. 



