250 SCROPHULARIACE^. Leucopliyllum. 



1. LEUCOPH'^LUM, Humb. & Bonpl. {Atv^og, light or white, and 

 cpvllov, foliage.) — Low and much-branched shrubs (of -Mexico and its northern 

 borders), densely scurfy-to men tose with usually silvery-white wool; the flowers 

 showy, on short bractless peduncles in the axil of the small obovate or roundish 

 and short-petioled entire leaves ; the corolla violet-purple. Fl. in summer. — 

 PI. ^quin. ii. 95, t. 109 ; Miers, 111. ii. 76, t. 58. 



L. Texanum, Benth. Shrub 2 to 8 feet high : leaves tomentose, obovate, half inch or 

 more long, almost sessile : calyx-lobes lanceolate-oblong : corolla almost campanulate ; the 

 limb an inch in diameter, deUcately sof t-viUous within. — DC. Prodr. x. 344 ; Gray in Bot. 

 Mex. Bound. 115. —Southern borders of Texas, Berlandier, Wright, &c. (Adjacent Mex.) 



L. minus Gray, 1- c. A foot or two high : leaves minutely silvery-canescent, obovate- 

 spatulate 'with long tapering base, half inch or less long: calyx-lobes linear: corolla with 

 narrower and more f uunelform tube and throat which much exceed the limb ; that half 

 inch in diameter, sparsely pubescent within. — South-western Texas, Wright, Bigelow, Parry. 



2. VERBASCUM, L. Mullein. (Altered from Barbascum, old Latin 



name.) Coarse weeds, from Europe, mostly biennials ; cauline leaves sessile 



and often decurrent on the stem : fiowermg in summer : flowers ephemeral. Hy- 

 brids abound. 



* Woolly or scurfy, tall and stout : flowers yellow, occasionally white. 



V. ThApsus, L. (Common Mullein.) Densely woolly throughout: stem simple, 3 to 6 

 feet high, winged by the decurrent bases of the oblong nearly entire crowded leaves : 

 flowers in a dense long spike, yellow: lower filaments mostly naked —Fields, a common 

 weed in the Atlantic States, rare in the Pacific. A white-flowered form ( V. elongatum, 

 Willd.), probably of hybrid origin, occurs occasionally. (Nat. from Eu.) 



V. LYCHNfris, L. (White Mullein.) Clothed with fine somewhat mealy wooUiness, 

 often paniculate-branched at summit : leaves ovate, acute, somewhat crenate, not decur- 

 rent, the upper surface becoming naked and green: racemes panicled, close: filaments 

 white-woolly. — Fields, N. Atlantic States, rather rare. (Nat. from Eu.) 



* Slender, green, more loosely-flowered, filaments all bearded with violet woolly hairs. 



V. Blatt.'Cria, L. (Moth Mullein.) Below glabrous; the loose virgate raceme and 

 calyx glandular: leaves oblong, obtuse, crenate or sometimes sinuate, not decurrent; the 

 small upper ones ovate, acute, partly clasping : pedicels solitary and much longer than 

 the linear-lanceolate calyx-lobes: corolla yellow or white and purple-tinged. — F. Claj/toni, 

 Michx. Fl. i. 148. Roadsides, Atlantic States. (Nat. from Eu.) 



V. virgAtum, Withering. Somewhat pubescent or hairy as well as glandular, especially 

 the raceme :' pedicels often in twos and threes, not longer than the calyx-lobes ; otherwise 

 very like a taller form of the last. — California. (Nat. from Eu. by way of Mexico 1 ) 



3. LINARIA, Tourn. Toad-Flax. (Name formed from Linum, Flax.) 

 — Herbs, chiefly natives of the Old World. Calyx 5-parted. Style filiform : 

 stigma small, nearly entire. Leaves, &c., very various. Fl. summer. 



* Indigenous species, slender glabrous annuals or biennials; with entire leaves, linear and alter- 

 , nate on the erect flowering stems, smaller and oblong and mainly opposite or whorled on procum- 

 bent shoots or suckers from the base : small blue flowers m a naked tenninal raceme. 

 L. Canadensis, Dumont. Flowering stems nearly simple, 6 to 30 inches high : leaves 

 flat (a line or two wide) : pedicels erect, not longer than the filiform and curved spur of 

 the corolla. — Chav. Mon. Antirr. 149 ; Hook. Bot. Mag. t. 3473. Antirrhinum Canadense, 

 L.; Vent. Cels, t. 49. Linaria Texana, Scheele in Linn. xxi. 761, large-flowered form.— 

 Sandy or gravelly soil, Canada to Texas, California, and Oregon. (S. Amer., &,c.) 

 L. Ploridana, Chapm. Flowering stem at length paniculately branching, a span or 

 two high ; its leaves filiform : pedicels spreading, filiform, sparsely and minutely gland- 

 ular-hispid, much longer than the flower : raceme at length flexuous : spur very short and 

 inconspicuous, subulate, slightly projecting below the calyx. — Fl. 290. — Sands of the 



