EUPHRASIA.] SCROPHULARINE^. 305 



VAR. marifima; capsule much longer than the calyx. Shores of 

 Shetland. 



11. RHINAN'THUS, L. YELLOW-RATTLE. 



Annual erect herbs, black when dry, parasitic on roots. Leaves opposite, 

 narrow, serrate. Flowers in secund spikes, yellow spotted with violet, 

 honeyed; bracts broad, cuspidate-toothed. Calyx ventiicose, compressed, 

 4-toothed. Corolla 2-lipped, tube subeylindric ; upper lip obtuse, com- 

 pressed, entire, with a toothed appendage on each side the tip ; lower 

 shorter, lobes 3 spreading. Stamens 4, hidden by the upper lip ; anthers 

 cohering by hairs, not spurred. Style filiform, tip inflexed, stigma sub- 

 capitate. Capsule orbicular, compressed, loculicidally 2-valved ; valves 

 membranous, entire, bearing the placentas in the middle. Seeds suborbi- 

 cular, compressed, hilum lateral ; embryo small. DISTRIB. Europe 

 (Arctic), N. Asia, N. America ; species 2-3. ETYM. piV, the nose, and 

 &v6os, flower, in allusion to the form of the corolla. 



R. Crista-gal'li, L. ; erect, leaves deeply crenate-serrate. 



Damp pastures and wet places, N. to Shetland; ascends to 2,500 ft. in the 

 Highlands ; Ireland ; Channel Islands ; fl. May- July .Glabrous or glandular 

 pubescent. Stem 6-18 in., simple or with opposite branches, 4-gonous. 

 Leaves distant, 1-2 in., oblong-lanceolate or linear-oblong, obtuse or acute. 

 Bracts longer than the calyx, ovate, taper-pointed. Flowers dimorphic as 

 in Euphrasia. Calyx J-| in., mouth small, teeth triangular. Corolla |-1 in., 

 yellow; lobes of upper lip blue. Anthers bluish. Capsule included in the 

 bladdery calyx-tube. Seeds with a broad or narrow wing. DISTRIB. Of the 

 genus. 



R. CRISTA-GAI/LI proper ; stem subsimple, bracts green, spikes few- and lax- 

 fid., corolla-tube hardly exceeding the calyx, lobes of upper lip short roundish. 

 E, mi'nor, Ehrh. Meadows and pastures. 



Sub-sp. E. MA'JOR, Ehrh. ; taller, much branched, bracts yellowish, spikes 

 many and dense-fld., corolla larger tube exceeding the calyx, lobes of upper 

 lip oblong, seed-wing broad (var. platyp'tera, Fr.) or narrow (stenop'tera, 

 Fr.), or and seed ribbed (ap'tera, Fr., R. Reichenbach'ii, Drej.). Fields, 

 sporadic, not in Ireland or Channel Islands. 



12. PEDICULA'RIS, Tournef. LOUSEWORT. 



Herbs, black when dry ; parasitic on roots. Leaves alternate whorled or 

 opposite, toothed or pinnatisect. Flowers in bracteate spikes or racemes, 

 white red purple or yellow, honeyed. Calyx tubular or campanulate, split 

 anteriorly ; teeth 2-5, unequal, entire lobed or crested. Corolla 2-lipped, 

 tube cylindric or throat dilated ; upper lip compressed, entire or notched, 

 or with 2 teeth below the tip ; lower 3-lobed. Stamens 4, concealed by 

 the upper lip, filaments or the 2 posterior only hairy ; anthers cohering 

 by hairs, cells obtuse. Capsule compressed, loculicidally 2-valved, seeds 

 few, in its lower part. Seeds ovoid, testa firm or lax rugose or smooth ; 

 embryo short or long. DISTRIB. N. temp, regions ; species 120. ETYM. 

 pediculus, being supposed to encourage lice in sheep. 



