250 SCROPHULARIACE^ffi. Leucophyllum. 



1. LEUCOPHYLLUM, Huinb. & Bonpl. (Jevxo,;, light or white, and 

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

 borders), densely scurfy-tomentose 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 spring and 

 early summer. PL JEquin. 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, delicately soft-villous within. DC. Prodr. x. 344 ; Gray in Bot. 

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



LJ. 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 unnelform tube and throat which much exceed the limb ; this 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: flowering 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. LYCHNITIS, L. (WHITE MULLEIN.) Clothed with fine somewhat mealy woolliness, 

 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. BLATTARIA, L. (Morn 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. V. Clayton! , 

 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?) 



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 in a naked terminal 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. 140 ; Hook. Bot. Mag. t. 3473. Antirrhinum Canadense, 

 L. ; Vent. Gels, t. 49. Linaria Texnna, Scheele in Linn. xxi. 761, large-flowered form. 

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



L. Floridana, 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 



