122 Hermann Wolff. — Umbelliferae-Apioideae-Ammineae heteroclitae. 



in umbellis terminalibus radiis usque 4-plo breviora, usque 1,5 cm longa, 3 mm lata, 

 in umbellis lateralibus radios superantia. Involucelli phylla 7 — 9, subaequalia, lanceo- 

 lata, cuspidata, 3-nervia(?), umbellulis ante anthesin subtriplo longiora, 5 — 5,5 mm longa, 

 1,5 — 2 mm lata. Petala »viridia«; fructus non visus. 



Ost-Turkestan: Thian-Schan »in valle fluvii Bajangol, regione sylvatica superiore«, 

 (V. Brotherus n. 753) — flor. mense Augusto. 



Nota. Specimina mihi non visa; species sec. cl. Freyn maxime affinis B. ranunculoidi, 

 a quo diversa caule elatiore, foliis acutis, cuspidatis, umbellis multo angustioribus , involucri 

 phyllis minoribus, acutis, cuspidatis. Suspicor plantam Freynianam ob involucellum usque ennea- 

 phyllum ad B. longicaule vel speciem affinem pertinere. 



53. B. americanum Coult. et Rose, Revis. N. Amer. Umb. (1888) 115, t. VIII, 

 f. 128, mericarpium transverse sectum; Gontr. U. S. Nat. Herb. VII. 1. (1900) 85, 

 f. 1 7 (fructus et mericarp. transverse sect.). — B. ranunculoides Hook. Fl. bor. amer. 

 I. (1833) 263; Torr, et Gray, Fl. North- Amer. I. (1838 — 40) 609. — ?B. anguloswm 

 Hook, et Walk.-Arn. Bot. Beech. Voy. (1841) 124. — Planta laete viridis. Caulis 

 erectus, parce breviterque ramosus. Folia basalia lineari-lanceolata, caulina perpauca, 

 linearia usque oblonga, zb amplexicaulia. Umbellae radiis 5 — 7 inaequalibus , 1,5 — 

 5 cm longis. Flores breviter pedicellati. Vittae usque 2 5. 



Subarktisches und pazifisches Nordamerika: von Alaska bis Montana, 

 Idaho und Wyoming. 



Nota -1. Specimina mihi non visa; descriptio nostra sec. illam cl. Coulter et Rose 1. c, 

 ubi (1. c. secundo) etiam enumerationem collectorum invenies. 



Nota 2. Suspicor specimina in Alaska collecta et ab autoribus ad B. americanum relata 

 ad B. ranunculoides var. triradiatum Reg. pertinere; forsan species sub titulo subspeciei vel 

 varietatis cum B. ranunculoidi conjungenda est. 



»This species is so variable in foliage that varieties would seem admissible. Resemblance 

 to the European B. ranunculoides is well shown by low forms with rather small oblong thin 

 leaves and quite prominent bractlets; while more abundant in collections are the larger forms 

 with elongated linear-lanceolate rather rigid stem-leaves and smaller bractels. In the European 

 species referred to, and to which our species has been heretofore referred, the oil-tubes are large 

 and solitary, while in our species they are so numerous (about 25) as to be continuous about 

 the seed-cavity. In habit there is a close resemblance to the European species. < (Coult. et Rose). 



54. B. longicaule Wall. Cat. (1828) n. 557; DG. Prodr. IV. (1830) 131; 

 C. B. Clarke in Hook. Fl. brit. Ind. II. (1879) 677; Franch. in Bull. Soc. philom. 8. 

 ser. VI. 1. an. 1893 — 94 (1894) 115. — B. rupestre Edgw. in Trans. Linn. Soc. XX. 

 (1851) 52. — Caulis stricte erectus, usque submetralis, saepe humilior, remote foliosus, 

 superne ramis paucis ± elongatis vel zb abbreviatis subsimplicibus instructus, raro 

 a basi jam ramosus vel simplex. Folia basalia lanceolato-linearia vel lanceolata vel 

 oblanceolata, obtusa vel dz acuminata, zb manifeste in petiolum angustata, ca. 5 — II- 

 nervia, usque 12 cm longa, i / 2 — 2 cm lata; caulina e basi amplexicauli late cordata 

 sublineari- usque ovato-lanceolata, supra medium sensim et zb longe acuminata, acuta 

 vel acutissima, multinervia, vel e basi haud vel vix dilatata ovalia vel oblonga, apice 

 obtusa, paucinervia, nervis semper zfc divergentibus, 3 — 10 cm longa, 6 — 15 mm lata. 

 Umbellae usque 15 cm longe pedunculatae, 3 — 7-radiatae, radiis ± inaequalibus, 

 sat tenuibus vel crässiusculis, usque 6 cm longis; involucri phylla 2 — 3 vel nulla (an 

 delapsa?), lanceolata usque ovata, longe acuminata vel obtusa, palmatim 9 — 1 5-nervia. 

 Involucelli phylla 10 — 12, saepe biseriata (interdum phylla plura zb connata), rarius 

 tantum 5, anguste lanceolata usque suborbicularia, zb obtusa vel zb acuminata, 5 — 9- 

 nervia, usque 7 mm longa, usque 5 mm lata, umbellulas usque ca. 50-floras s. a. 

 subduplo superantia vel breviora, fructiferis usque dimidio breviora. Pedicelli floribus 

 2 — 3-plo longiores, fructibus zb breviores. Petala ca. 1 mm lata, cum stylopodio lato 

 (in sicco ?) violaceo-nigricantia, late obtriangularia vel transverse subreniformia, superne 

 intrusa, lobulo inflexo subquadrato multo breviore. Fructus ovoideus vel elliptico- 

 ovoideus, 3y 2 — 5 mm longus; juga filiformia vel manifeste alata; vittae valleeulares 

 usque ternae, commissurales 4; endospermium facie leviter excavatum. 



