40 ELEMENTS OF BOTANY. 
I. MERTENSIA, LUNGWORT. 
Calyx short, deeply 5-cleft or 5-parted. Corolla somewhat 
trumpet-shaped or funnel-shaped, often with 5 small folds or 
ridges in the throat, between the points of insertion of the 
stamens. Style long and slender. Nutlets smooth, or at 
length becoming wrinkled. Leaves generally pale, smooth, 
and entire. Perennial herbs. 
(M. Virernica), Lunewort, Biurt Beis. Smooth, nearly 
erect, 1-11 ft. high; root-leaves large, obovate, or nearly so, and 
petioled, stem-leaves smaller, sessile; flowers clustered, corolla 
nearly trumpet-shaped, varying with age from lilac to blue (or 
occasionally white), stamens with slender filaments projecting 
beyond the corolla-tube. 
Il.. LITHOSPERMUM, GROMWELL, PUCCOON. 
Corolla funnel-shaped or salver-shaped, with or without 
folds or appendages at the mouth of the tube; the hmb 
5-cleft, its divisions rounded. Stamens included in the 
corolla-tube, the anthers nearly sessile. Nutlets either 
smooth or wrinkled, generally very hard and bony. Herbs, 
with stout, usually reddish roots; flowers appearing axillary 
and solitary or else in leafy-bracted spikes. 
a. (L. ARVENSE), CorRN GROMWELL. A rough weed, about 1 ft. 
high, with narrowly lanceolate leaves and inconspicuous whitish 
flowers in the upper leaf-axils; corolla hardly extending beyond the 
calyx, without appendages in the throat; nutlets rough or wrinkled 
and dull. , 
b. (Ll. wirTUuM), Harry Puccoon. Rough-hairy, 1-2 ft. high; 
corolla deep orange-yellow, with appendages in the throat and clad 
with wool within at the bottom; flowers handsome, peduncled, in a 
crowded cluster. Perennial. 
c. (L. CANESCENS), Puccoon, Inp1aAn Parnt. Clothed with 
soft hairs 8-12 in. high; flowers axillary and sessile; corolla append- 
aged, not woolly within, showy, orange-yellow. 
LABIATAE, MINT FAMILY. 
Mostly herbs, with square stems and opposite, more or less 
aromatic leaves, without stipules. Flowers generally in 
