174 WILSON EXPEDITION TO CHINA 
NORTHEASTERN ASIA. Transbaikalia (see Herder, l. c., and Wolf, 1. c.). 
I have seen specimens of this species only from the Altai, collected by Sapo- 
schnikof, June 10, 1897. It is very closely related to S. minutiflora Turczaninow 
(see the keys, p. 79 and p. 93). 
SPECIES SECTIONIS INCERTAE. 
177. Salix allochroa Schneider. See p. 72. 
178. Salix polia Schneider, n. sp. 
Frutex erectus, ut videtur satis longe ramosus; ramuli novelli annotinique dense 
albo-griseo-tomentelli, deinde glabrescentes, flavi, vetustiores brunneo-cineras- 
centes; gemmae ovato-acutae, subappressae, tomentellae, rubro-brunneae. Folia 
juvenilia lanceolata v. oblanceolata, apice breviter acuta v. subobtusa, basin versus 
sensim attenuata, in petiolum 1-4 mm. longum villosum producta, supra dense 
sericeo-villosa, paulo v. vix viridescentia, subtus densius albo-sericeo-villosa, nervis 
nondum visibilibus, margine dense villosula, ut videtur interdum minute glandu- 
loso-dentieulata (glandulis inter pubescentiam occultis), 2-4 em. longa, 0.4-0.8 
cm. lata; stipulae petiolis breviores, ovato- v. angusto-lanceolatae, tomentellae. 
Amenta (9 tantum visa) subcoetanea, subsessilia, basi foliis parvis lanceolatis 
2-3 suffulta, erecta, densa, cylindrica, 3-4 cm. longa, 1 em. crassa, rhachi villoso 
tomentella; ovaria sessilia, juvenilia crasse ovata, dein crasse ovato-oblonga, dense 
Sericeo-villosa, stylo mediocri satis tenui integro stigmatibus linearibus satis 
longis apice bifidis subaequilongo coronata; bracteae late obovatae; ovaria juve- 
nilia plus minusve amplectentes, dein ovariis triplo breviores, flavo-brunneae, 
concolores, utrinque sericeae v. sericeo-villosae et ciliatae; glandula una ventralis 
plana, oblongo-rectangularis, apice truncata v. emarginata, bracteis circiter 2-3-plo 
duet Capsulae griseo-sericeo-villosae, circiter 6 mm. longae, sessiles (v. sub- 
sessiles). 
MONGOLIA: near Saisansk, along a watercourse in sandy soil, May 21, 1911, 
F. N. Meyer (No. 733, type; 9). ; 
This species resembles S. Lapponum Linnaeus (Spec. 1019 [1753]) and especially 
S. Krylovii Wolf (in Act. Hort. Petrop. XXVIII. 537 [1911]. —S. pseudolapponum 
Wolf apud Krylov, Da. Aamaa, 1226 [non Seemen] [1909)], to which I refer No. 836 
of F. N. Meyer, Altai, Birel, June 16, 1911, and No. 793, Marka Kul, June 7, 1911. 
In S. Lapponum Linnaeus, however, and in S. Krylovii Wolf, the ovaries are 
tinctly stalked, while they are sessile in our new species. S. Lapponum Linnaeus 
differs also in the more or less acute bracts, and the mostly longer style as well as 
inthe glabrous brown branchlets. S. Krylovii Wolf has the same brown, somewhat 
shining branchlets of the second year as S. Lapponum Linnaeus and broader, ellip- 
tical or oblong-obovate leaves, while in S. polia the leaves are lanceolate or oblan- 
ceolate and the branchlets are distinctly yellowish. As long as I do not know the 
@ flowers 1 am not sure to which section S. Krylovii Wolf belongs. S. Lappo- 
num Linnaeus is placed by von Seemen (in Ascherson & Graebner, Syn. Mitteleur. 
Flora, IV. 182 [1908]) in sect. Viminales, but I think it would be better to keep 
this species in a distinct section. Andersson (in De Candolle, Prodr. XVI. 275 
[1868]) placed S. Lapp Li is under sect. Niveae subsect. Villosae An- 
dersson, the first species of which is S. speciosa Hooker & Arnott. There is nO 
S. villosa under the different forms united by Andersson in his subsection, which 
to my opinion does not form a natural group. 
The specific name is derived from moMós, white of hair. 
179. Salix algista Schneider, n. sp. v. hybr. 
Frutex v. arbuscula, 0.9-4.5 m. alta, ut videtur satis breviter ramosa; ram 
novelli sparse sericei, biennes glabri, purpureo-rubri, vetustiores cinerascentes. 
