329 
LABIATJE. (MINT FAMILY.) 
cell, the latter cohering with each other. Achenia large. (Name 
from (jvv, together , and avrjp , for anther , on account of the union 
of the anthers.) 
1. S. graildi flora, Nutt. — Copses and banks, Ohio and 
southward. June. — A biennial hairy herb, with nearly simple 
stems, 1° high. Lower leaves long-petioled, broadly ovate and heart- 
shaped, crenate, thin, the lower floral sessile and somewhat similar. 
Peduncles 2-flowered, short. Corolla l£ r long, yellowish-white. 
23. PHYSOSTEGIA, Benth. False Dragon-head. 
Calyx nearly equally 5-toothed, obscurely 10-nerved, after flow¬ 
ering inflated-bell-shaped. Corolla with a much exserted long 
tube and inflated throat; the upper lip rather erect, entire ; the 
lower 3-parted, spreading ; its lateral lobes small, the middle 
broad and rounded. Stamens 4, ascending under the upper lip : 
anthers approximate, the cells parallel. — Perennial smooth herbs, 
with upright wand-like stems, and sessile lanceolate serrate leaves. 
Flowers large and showy, or flesh-color variegated with purple, 
opposite, in simple or panicled terminal leafless spikes, crowded. 
(Name from (frvo-a, a bladder, and (rreyoo, to cover , on account of 
the inflated calyx and corolla.) 
1. P. Virginiall», Benth. Leaves varying from lanceolate- 
linear to ovate-lanceolate ; spikes dense; bracts shorter than the ca¬ 
lyx, ovate, pointed. (Dracoc6phalum Virginianum, L.) — Moist pla¬ 
ces, along rivers, from New York and Penn, westward. July, Aug. 
— Very variable, l°-4° high ; the corolla nearly 1' long. 
24U LiAMIUM, L. Dead-Nettle. 
Calyx tubular-bell-shaped, about 5-nerved, with 5 nearly equal 
awl-pointed teeth. Corolla dilated at the throat; the upper lip 
ovate or oblong, arched, narrowed at the base ; the middle lobe 
of the spreading lower lip broad, notched at the apex, contracted 
as if stalked at the base, the lateral small, at the margin of the 
throat. Stamens 4, ascending under the upper lip: anthers ap¬ 
proximate in pairs, 2-celled, the cells divergent. Achenia trun¬ 
cate at the apex. — Herbs, decumbent at the base, the lowest 
leaves small and long-petioled, the middle ones heart-shaped and 
doubly toothed, the floral similar but nearly sessile, subtending 
the axillary whorled clusters of flowers. (Name from \aipos, the 
throat, in allusion to the ringent corolla.) 
28 * 
