PIPER—FLORA OF THE STATE OF WASHINGTON, 65 
Distribution of characteristic Arctic-Alpine species—Continued. 
] | ] | | 
| | | | 
. yw 
|Z 5 | os | | of 
23 . Z £ (Eg 
lei Zlelelelzlz (sl¢ig¢/2/\& 
Speci 2 € 2 2/2 2 zl E 2/2 E/E 8 
Name of species. 1g ¢ 3 4/3 | -/ E/E; |S) 218 
P/E 2S HS A HIT S/H Ee lA lA 
. v a ~ ~ Pie ~ = ~ |e 
S/S FLEES SLE SIE E\2)= 
P/RIBIS/S/S/S/5/2/5/5/5/5 
“A\/A/SIAl/AIALALA RAH) ele 
| | | | | 
Polemonium elegans..........-..eeeseeeeeee eeee Jewecleeceleces pa, Ge we[eeeeleeee 
Polygonum minimum..................---..-- x | X | KX j...-) X | 6X |... |x| x X [....)---- 
Polygonum newberryi ...........-.. 0.2 eee cece eee eee | x | x |X X | X j....| Xf....J....) X 
Polygonum viviparum ....................... KX | OX |... ee eee eee eee bee.) X foeee[....] x |e... 
Polystichum lemmoni........2............-+: loo eeleaes \eeec| X [eceeleccelecee jeceejeeeeleeee] X [eee ejeeee 
Polystichum lonchitis.......................- x| x|x]|xj|x|x.....| x| xX wees] X [ones 
Potentilla dissecta .........22....020--002000e ee ee ee XX /|..../...e x x | x |.... 
Potentilla flabellifolia................-.--.--- TUX Ts x x! xl xf xl xhos x 
Potentilla villosa.........2....02.0..020eeeeee | x |....{ K [....| X .eeeleeeefeeee ee Oe ee ee 
Pulsatilla occidentalis ..................22224) X ee. X [ieee] X sees eee x |....| X |X) x 
Ranunculus eschscholtzii ............-....--- |x x | x | X |i... X ....] K] X [eee |x| x 
Ranunculus suksdorfii ................2..---- 0065 X j....leeee x) xX loll. X |......- leeeeleeee 
Ranunculus verecundus ........... 2.00.20 ee cee cee eee |eeee| X |eeee eeeeleeee | ee ee ee ee lessee 
Salix nivalis.......2. 22... 22. e eee ee cee cee eee >. ye | x ll... 
Salix temera.... 22.2.2... e cece ee eee eee eee tees X o..../eeee | x | wenelenee ene eee | X 
Saxifraga adscendens..............-..2..---- XX weeeleeee ee ee ee | x | 
Saxifraga bongardi...... cee eeeeceeeeees seve Ox x x) x | x Le x | x | |; X| xi x 
Saxifraga caespitosa.................0.2.0020- lx ji... x fi.) Klee ele. eee on x 
Saxifraga debilis............... ne ee wee) X [eceeleceeleeee) X foweejeeee x 
Saxifraga nelsoni............2222222----000eee box foe.) X feces) X feces cece cece eee [eseeleeeeleeee 
Saxifraga tolmiei...................22...--222006- X |...-[.... X| X/| X| xX x | xX i...) X 
Sibbaldia procumbens............-...-.---++- | x| xX|xX|x|xXj] X)........ x | X}..../ X 
Sieversia rossii.... 02.00... cece cee eee eee > aa a a > a | X 
Sileneacaulis................-..-.------------ x | xX | X]....) X |... see eee. X |e... 2ee x 
Silene lyallii 2.2.20... cc. cee eee tees }x| xX] xX] XX] X |)... ee eee ee ee cence ee 
Silene suksdorfii........2....2.2..22. 202 ee eee noes leteleeee] X | X | X/....| X eee] XK Lee. eee. 
Sitanion rigidum... ........... 22-2 ceeeeeeeeeee eens x | Ki X) Xi XX KL. 
Smelowskia calycina.............-----.------ x |...) x | x {....) x |...) x | ed | X 
Smelowskia ovalis...........2...-.0...00---4- leeceleeee) X x | x | ed ed Pe Pre ar 
Spiraea hendersoni ..............-----+------ ed an es ee es | a Jewesleces — 
Spraguea umbellata............ 0.00... e eee eee eee K |....[....) X x | x |x| xX|X/)....) xX x 
Thlaspi alpestre................- 2022 e cece eee e eee wecclecceleces| X |ee--leeee xX |X|...) x1 x fi. 
Trisetum spicatum .............-.-.---+-----+ x|x| xi}... x x | x |x) Xj....) X| xX x 
Veronica alpina...........-.--....0.--2------ xX [...-| KX Je...) KX] XK le...) KX) K ll... eee. x x 
Veronica cusickii .............2---2+--20+-+- wee) Xie] K |X| Xe x) XX [eee 
Viola flettii...........020. 02.2222 e eee eee eee leeeeleeee) X [eee e/seeel eee Pe eee Jasscleeee ee oo 
Zygadenus elegans........-....-2-..22---02e0 eee x > xX a aa inn x | ee x 
| 
REGIONS OF PECULIAR BOTANIC INTEREST. 
In a State where conditions are so diverse as in Washington, and 
where practically every locality that has been carefully explored 
contains species of apparently very limited range, it is difficult to say 
which places have transcendent botanical interest. Where, however, 
the local massing of species of narrow range can be associated with 
more or less definite environmental conditions, the phenomenon is 
worth especial consideration. The following areas thus deserves 
special attention. 
THE OLYMPIC MOUNTAINS. 
The most striking peculiarities as regards these mountains, botan- 
ically considered, are the excessive rainfall on their southern and 
western slopes, and their isolated position. The heavy moisture 
precipitation results in modifying greatly the effect of altitude, so 
that the lines of zonal demarcation are much obscured. Many Humid 
29418—06 m——-5 
