166 V. L. Komarov. 
structa nuda stigma subsessilis lobis subintegris latiusculis. Capsulae 
submaturae violaceo. purpureae, serius fuscescentes. 
Ab affinibus S. polaris et S. herbacea differt habitu fruticuloso etc. 
Legi in alpibus peninsulae Kamtschatka circa lacus Natshika et 
Kronotzkoe, et ad fontes fl. Kamtshatka, annis 1908— 1909 florentem 
atque fructiferam. 
33. Betula avatshensis!) (— avaczensis — awatschensis) Kom., nov. spec, 
Arbor mediocris satis crassa, cortice fusco castaneo lenticellis albis 
instructo, in truncis altioribus fusco-cinereo; rami juniores dense glan- 
duliferi; folia glabra subcordato acuminata margine biserrata; amenta 
fructifera cylindrica cire. 2 cm lg., 0,8 cm lata breviter pedunculata 
pendula, bracteae brevissime petiolatae margine breviciliatae, lobis la- 
teralibus usque ad basin fere liberis obovato-spathulatis, basin versus 
angustatis, lobus intermedius paullo longior anguste obovatus pedicellatus ; 
nuculae obovatae glaberrimae basin versus infra leviter carinatae pallidae, 
alis aequilatis cinctae. 
Spicae masculae (autumno) 2—4 racemosae terminales 2—3 cm 
longae glaberrimae bracteis castaneo brunneis apice rotundatis vel le- 
viter acuminatis, margine tenuiter ciliolatis, gemmae autumnales obo- 
vatae laeves. 
Species hac e grege subsectienis „Costatae* Regel ab omnibus 
bracteis fructiferis ad basin usque fissis differt; sed origo hybrida (B. 
japonica Sieb. X D. Ermanii Cham.?) exclusa non est. 
Legi in peninsula Kamtshatka in valle fl. Kalachtyrka non procul 
ab oppido Petropavlovsk ad medium Octobri mensis 1909 foliis jam de- 
lapsis, fructiferam. $ 
34. Rumex aureostigmatias Kom., nov, spec. 
(Section Acetosélla Meissn.) 
Folia radicalia longepetiolata spathulata cochleariformia oblonga vel 
lanceolata obtusiuscula; ochreae scariosae pallide brunnescentes, acutae; 
caulis simplex vel rarius pauciramosus, 10—20 cm longus sulcatus; folia 
caulina pauca lineari oblonga crassa; panicula laxiuscula ramis strictis 
gracilibus; pedicelli tenuissimi; flores parvi dioici; perianthii lobi interni 
purpurei obovati breviter acuminati; stigmata penicilliformia lobis an- 
gustissimis aureis perianthio aequilongis; nucula parva lucida pallide 
straminea trigona. 
A proximis R. Acelosella L, et R. graminifolio Lamb. foliis radicalibus 
plerumque integris spathulatis in sicco subcoriaceis, ad vivum, ut vide- 
tur, crassis. R. Acelosella var. subspathuluta Trautv. differi a planta 
nostra jam foliis tenerrimis. 
17. VII. 1910 legit florentem V. J. Kozlovski in pratis alpinis vul- 
cani Shivelutsh peninsulae Kamtshatka. 
35. Rumex kamtshadalus Kom., nov. spec. 
(Sectio Litpathum Adans.) 
1) E nomine fluvii et sinus maritimi Avatsha. 
