Orobanchaceae 



811 



Var. sekimotoana (Makino) Makino. A. sekjmotoana 



Makino Hime-namban-giseru. Plants 10-20 cm. high; 



scales narrow, 4-6 mm. long; calyx 15-20 mm. long; corolla 



2-3 cm. long. Mountains; Honshu (Kanto Distr.). The 



typical phase occurs from India to Malaysia. 



2. Aeginetia sinensis G. Beck. A. japonica sensu auct. 

 Japon., non Sieb. & Zucc; A. indica forma japonica Bakhuiz., 



excl. syn. Sieb. 0-namban-giseru. Plant slightly larger 



than the preceding; stems and pedicels stouter; pedicels 20- 

 40 cm. long; calyx 2.5—4 cm. long, pale rose-purple, obtuse; 

 corolla 4-6 cm. long, the lobes spreading, depressed-rounded, 

 8-10 mm. long, 1-1.5 cm. wide, obsoletely serrulate. July- 

 Sept. Honshu, Shikoku, Kyushu. Ryukyus, and China. 



2. BOSCHNIAKIA C. A. Mey. Oniku Zoku 



Stems stout, simple, scaly, tuberouslike, fissured, and naked at base; spikes stout, many-flowered, solitary, simple; flowers 

 sessile, ebracteolate, solitary in axils of bracts; calyx cup-shaped, with 5 unequal teeth; corolla-tube recurved, the limb bilabiate, 

 the upper lip erect, entire or shallowly bilobed, concave, the lower lip with 3 short lobes; stamens subexserted, the anther locules 

 parallel, equal, not spurred or tuberculate; placentae 2, each deeply 2-lobed; stigma dilated, shallowly 2-fid; seeds minute, sub- 

 globose, reticulate. Three or four species, in Asia and N. America. 



1. Boschniakia rossica (Cham. & Schltdl.) Fedtsch. & 

 Flerov. Orobanche rossica Cham. & Schltdl.; B. glabra C. A. 



Mey. Oniku. Root parasite on Alntis maximowiczii; 



stems stout, yellow-brown, terete, erect, 15-30 cm. long, densely 

 scaly, especially in lower part; scales rather diick, narrowly 

 deltoid, 7-10 mm. long, erect, obtuse, the upper ones ascending 

 or obliquely spreading, with rather membranous margins, 

 glabrous; spikes about half as long as the whole stem, densely 



many-flowered, the bracts deltoid or narrowly so, often pubes- 

 cent on margin at base; calyx truncate, with 3 teeth in front, 

 undulate on posterior margin; corolla erect, recur\'ed, about 

 15 mm. long, lip loosely ciliate, the upper rounded, the lower 



small, 3-lobed. July-Aug. Alpine areas among bushes; 



Hokkaido, Honshu (centr. and n. distr.). Sakhalin, Ku- 



riles, Kamchatka, Korea, e. Siberia, and nw. America. 



3. LATHRAEA L. Yama-utsubo Zoku 



Whitish, yellowish, bluish, or sometimes rose-colored root parasites; rhizomes branched, scaly; stems simple, with scalelike 

 leaves; racemes or spikes densely or loosely flowered; flowers short-pedicelled, ebracteolate, with a disc at the base of ovary; calyx 

 campanulate, 4-toothed, the lobes broad, valvate in bud; corolla-tube suberect, the limb bilabiate, the upper lip retuse, some- 

 times galeate, the lower lip shorter than the upper, truncate or shallowly 3-lobed; stamens shorter than to nearly as long as the 

 upper lip; ovary with 2 bifid placentae; capsules 2-valved; seeds many, small, globose, rugulose. Few species, in Eurasia. 



1. Lathraea japonica Miq. L. na\aharae Makino 



Yama-utsubo. Plants whitish, glabrous or glabrescent, with 

 short branched creeping rhizomes, densely fleshy-scaly; scapes 

 erect, 10-30 cm. long, loosely few-scaled; spikes densely many- 

 flowered, 5-13 cm. long, the bracts membranous, ascending, 

 broadly lanceolate or narrowly ovate, 3-7 mm. long, longer 

 than the pedicel, obtuse; calyx 5-8 mm. long, the teeth deltoid; 



corolla tubular, 12-15 mm. long, the upper lip broad, retuse; 



anthers with a short awn at one end. Apr.-June. Woods 



in mountains; Honshu, Shikoku, Kyushu. 

 Var. miqueliana (Fr. & Sav.) Ohwi. Clandestina japonica 



Miq.; L. miqueliana Fr. & Sav. Ke-yama-utsubo. Plant 



prominently pubescent. 



4. OROBANCHE L. Hama-utsubo Zoku 



Variously colored parasitic herbs; scapes usually more or less fleshy, scaly, rarely branched; flowers solitary in axils of bracts, 

 sessile or nearly so, bracteolate or ebracteolate, forming a terminal spike; calyx irregularly 2-fid or divided into 2 lateral seg- 

 ments, these 2-lobed or entire, rarely with a vvell-developcd dorsal segment, the lobes membranous, usually acuminate; corolla- 

 tube usually ampliate, the limb more or less bilabiate, the upper lip erect, entire or 2-lobed, the lower lip spreading, 3-lobed, 

 sometimes with tubercles or plaits between the lobes; stamens not exserted, the anthers usually mucronate at base; placentae 

 4; seeds minute, globose. About 100 species, in the N. Hemisphere, chiefly in the Old World, few in N. America. 



lA. Corolla pale purple, about 2 cm. long, white-woolly externally 1. O. cocruUscens 



IB. Corolla pale yellow with purple striations, about 15 mm. long, short glandular-pubescent externally 2. 0. minor 



1. Orobanche coerulescens Steph. ex Willd. O. nip- 



ponica Makino; O. japonensis Makino; O. a\iana Honda 



Hama-utsubo. Plants pale bluish purple, white-pubescent; 

 stems rather stout, 10-30 cm. long inclusive of the spikes, erect, 

 thickened at base; scalelike leaves at base of stem looser, nar- 

 rowed and membranous above, lanceolate or narrowly ovate, 

 1-1.5 cm. long, loosely white-pubescent; spikes rather densely 

 many flowered, the bracts narrowly deltoid; flowers about 2 

 cm. long; calyx membranous, about half as long as the corolla; 

 upper lip of corolla broad, retuse, the lower lip spreading, 3- 

 lobed, with undulate margins; capsules narrowly ellipsoidal, 

 about 1 cm. long. May-July. Parasitic on Artemisia, along 



rivers and near seashores; Hokkaido, Honshu, Shikoku, Kyu- 

 shu. Formosa, Korea, Ryukyus, China, Siberia, and e. 



Europe. 



2. Orobanche minor Sutton. Yase-utsubo. Stems 

 simple from a thickened base, 10-^0 cm. long; leaves scalelike; 

 flowers loosely racemose on upper part of stem, solitary in 

 axils of caudate-lanceolate bracts; calyx deeply bifid, the seg- 

 ments 2-lobed, lobes unequal; corolla bilabiate, pale yellow, 

 purple-striate, about 15 mm. long, the margin of lobes mi- 

 nutely toothed. Naturalized in Honshu; root parasite on 



Trijolium spp. Introduced from Europe. 



