Boschniakia. 327 



B. Bracteolae duae. Flores 15 — 18 demum 25 mm longi. 



Calyx inaequaliter 2 5-dentatus, dentibus triangulari- 



bus, oblongis vel lobiformibus, margine piloso-ciliatis in- 

 structus. Filamenta ad basim dilatata et evidenter ciliata; 

 thecae oblongae, connatae. Placentae 2 — 3. Capsula glo- 

 bosa 10 — 1 7 mm longa, bi- vel trivalvis. Semina glo- 



bosa, pulchre foveolata Sect. II. Thamnophagus. 



2. B. Handelii. 



Sect. I. Euboschniakia G. Beck. 



Euboschniakia G. Beck. — Boschniakia G. A. Meyer, 1. c. — Flores dense spicati, 

 vix pedicellati, sine bracteolis. Calyx connato-cupularis, inaequaliter breviterque 5-dentatus. 

 Corolla infra ventricosa, in fauce angustata, in limbo bilabiato ampliata; labium superum 

 galeiforme, integrum; inferum multo brevius, trilobum. Stamina 4, exserta; antherae 

 biloculares, thecis subrotundis, subseparatis instructae. Germen uniloculares. Placentae 

 duae, in ovario transverse secto T-formes vel bicrures, multiovulatae. Capsula rotunda, 

 styli basi persistente rostrata, bivalvis. Semina numerosa, oblonga, testa eleganter 

 reticulata tecta. 



1. B. glabra C.A.Meyer ex Bongard in Mem. acad. St. Petersb., nova series (VI) 

 II. (1833) 157; Walpers, Repert. III. 478; Reuter in DC. Prodr. XI. 39; Ledebour, Fl. 

 Ross. III. 1. 323; A. Gray, Synopt. Fl. North Amer. II. 1. (1878) 313; Beck in Engl, 

 u. Prantl, Nat. Pflanzenfam. IV. 3 b. 124, fig. 56 0. — Orobanche racemosa Steph. 

 Herb. sec. Ledeb. 1. c. — Lathraea amentacea Schlechtd. et L. strobilacea Schlechtend. 

 in Herb. Berol. (?Beck) sec. Ledebour, 1. c. III. 323. — Orobanche rossica Cham, et 

 Schlechtend. in Linnaea III. 132. — 0. glabra Hook. Fl. bor. amer. II. (1840) 91, 

 t. 167. — Stellera lathraeoides Fisch, manuscr. sec. Ledebour 1. c. — Orobanche caule 

 simplicissimo ultra dimidium florifero Gmelin, Fl. sibir. III. (1768) 216, t. 46, fig. 2. — 

 Rhizoma tuberosum, solidum, propter squamas evanidas reticulatum, rugosum. Caules 

 — 40 cm alti, in siccitate uti planta tota pulli, plures vel singuli, simplices, cylindracei, 

 infra copiosissime imbricato-squamati; squamae latae, inferiores ovales, obtusae vel api- 

 culatae, in siccitate intense fuscae, glabrae, superiores trianguläres, acutae, interdum 

 puberulae. Spica cylindracea, usque ad 22 cm longa, densiflora vel basi modo laxiuscula, 

 caule vix crassior. Flores erecto-patentes, 10 — 12 mm longi; pedicelli brevissimi, fructus 

 tempore usque ad 1 cm longi et bracteis longiores; bracteae fornicatae, calycem longi- 

 tudine subaequantes vel paulo longiores, obovales, obtusissimae, interdum margine pilo- 

 sulae; bracteolae desunt. Calyx oblique scutellatus, subinaequaliter 5-dentatus; dentes 

 breves, trianguläres, acuti, margine pilosuli; posticus minor vel unus alterve abbreviatus. 

 Corolla ventricoso-inflata, ad faucem paulo angustata, (itaque suburceolata), limbo bi- 

 labiato instructa; labium superum erectum, fornicatum, subintegrum rarius bifidum, 

 margine pubescens; inferum trilobum, lobis brevibus, aequalibus, patentibus, margine 

 pilosulis. Stamina 4, in corollae tubo tertio infimo 2 — 3 mm supra basim inserta, 

 valde exserta, patula, separata; filamenta glabra vel basi pilis articulatis parce pilosula ; 

 connectivum sub antheris dilatatum; thecae subrotundae, subseparatae, muticae glabrae 

 albae; pollen 20 — 22 (*. Stylus glaber. Germen subglobosum, in lateribus sulcatum, 

 uniloculare; placentae duae, in ovario transverse secto T-formes. Capsula calyce 

 longior, 6 — 7 mm longa, bivalvis; valvae subcirculares, styli basi obliqua rostratae. Se- 

 mina numerosa, ellipsoideo-oblonga, albida, 0,45 — 0,7 mm longa, testa eleganter reti- 

 culata tecta; cellulae testae dense reticulato-porosae. — Fig. 23-4 — G. 



Plantae nutrices. Crescit ad radices plantarum sequentium: Alnus sibirica Fisch, 

 (sec. Turczaninow), A. fruticosa Rupr. (sec. Maximowicz), A. viridis DC. (= Betula 

 ovata Schrank). 



Von Sibirien bis Kamtschatka, China und Japan verbreitet, dann im nord- 

 westlichen Nord-Amerika. 



Sibirien. Am Jenisei (J. G. Gmelin nach Ledebour); am Flusse Angara westlich 



