National Institute of Informatics - Digital Silk Road Project
Digital Archive of Toyo Bunko Rare Books

A LIST OF FLOWERING PLANTS FROM INNER ASIA.

69

Geogr. area of P. soovgorica : From Eastern Russia through Inner Asia until Transbaicalia, Tibet, Alpine Himalaya and Afghanistan.

Potent/lla serrcea L., Sp. pl. ed. 1 (I 7 5 3) 495; Hemsley and Pearson, in Peterm. Mitteil. Ergänzungsbd. 28 (I 900) 374; Th. Wolf, Monogr. Gatt. Potent. (1 908) i 6 ; Hemsley, in Journ. Linn. Soc. 35 (I 902) 175 (var. polyschista Lehm.); Keissler, in Ann. Naturh. Hofmuseum (I 907) 25 (var. Iolyschista Lehm.) ; Stewart, in Bull. Torrey Bot. Club (1916) 635; Fedtschenko, in Acta Horti Petrop. XXI (I 903) 324; XXIV (I 905) 3 2 9 ; XXVIII (1907) 109, (I 909) 48 I ; P. polyschista Boiss. ; Fedtschenko, 1. C. XXI (1903) 325.

N. E. Tibet', Camp I, the valley of Kara-muran, Kwen-lun, 407 5 m., 7 th Aug. 1896. According to HEMSLEY and PEARSON (1. c.) the identification is not sure owing to insufficient material.

Geogr. area: From Ural eastwards to Transbaicalia ; Afghanistan , Pamir, Tibet, Himalaya.

Potentilla hololeuca Boiss., in Kotschy, Pl. Pers. bor. no. 345 (1843); Fl. Or. II (1872) 710; Lehmann, Rev. Potent. (i8 5 6) 69, tab, 27; Th. Wolf, Monogr. Gatt. Potent. (1908) 176.

var. tibetica Ostf. nov. var. (Pl. VI, Figs. I —2). Differt a typo: statura multo minor (caules 4-6 cm. longi), folia radicalia 2 juga, tomentum in pagina inferiore et e pilis longis crispatis et e pilis sericeis micantibus compositum.

Northern Tibet, Ara-tagh, 43 7 3 m., 24th July 1900 (flowering, Fig. 2) ; S. W. Tibet, Height above the source of Tsangpo, northern foot of Himalaya, 5051 m., 13th July 1907 (flowering, Fig. I).

Dr. Th. WOLF has only seen the specimens from Ara-tagh. He agrees with me that they look very like P. hololeuca, especially the var. minor Th. Wolf, 1. c. i 77, but owing to differences in the clothing of the leaves he suggests that they are a hybrid between P. hololeuca and P. Saundersiana Royle. His notes are as follows:

»Im Blattschnitt und Habitus sind diese Pflänzchen der Pol. hololeuca Boiss. var. minor Th. Wolf (Monogr. Gatt. Pot. 177), welche in Centralasien nicht selten ist, sehr ähnlich, aber in der Behaarung verschieden (P. hololeuca besitzt ein dickes ,tomentum floccosunn`, welches nicht von Seidenhaaren bedeckt ist!). — Ich halte vorliegende Pflänzchen für den Bastard Potentilla hololeuca Boiss. v. minor X P. Saundersiana Royle.

»P. hololeuca x nivea wäre nicht ausgeschlossen, aber P. hololeuca X Saundersiana scheint mir wahrscheinlicher (nivea und Saundersiana stehen sich übrigens sehr nahe!). Ähnliche Zwischenformen sah ich aus Zaidam (Asia centr.), gesammelt von Roborowsky, und aus Tibet, gesammelt von Ladygin in 4 100 m. Höhe.«

I do not think that there is sufficient evidence to believe in a hybrid origin of these specimens, and I felt my doubt strengthened when I got the same little plant