296 COMPOSITAE 
11. Solidago dectimbens Greene. Dwarf Goldenrod. Fig. 5500. 
someee humilis var. nana A. Gray, Syn. Fl. “ pee 12; 148. 1884. 
Sol idag Gr eene, Pitto nia 3; 161. 
Ta kieec bellidifolia oT op. cit. 4: 100. 
Solidago hesperia Howell, Fl. N.W. Amer. 30 
olidago purshii var. nana Fa well, age tee atte 12: 72: 19350. 
Solidago glutinosa var. nana Cronquist, Rhodora 49: 76. 1947 
Solidago spathulata var. and CF rages Vasc. Pl. Pacif. Nive thir: Sic31 1). 1955. 
Stems several from a ligneous branching caudex, 5-25 cm. high, glabrous or sometimes 
puberulent, more or less viscid and hs n hispidulous within the inflorescence. Basal and lower 
leaves obovate or spatulate, 2-7 cm. long Gnelading petiole), obtuse or rounded, crenate-serrate 
pert ie essentially diggs ee s few, reduced; heads comparatively few, corym- 
rate or in a short raceme or near ae simple thyrse; ees re 4-5.5 mm. high, the phyl- 
lares Tinear-oblo ng, obtuse; oo florets 8-12, not nets exceeding the 11-19 disk- ‘florets ; achenes 
hi us 
Alpine ridges and rocky slopes, Boreal Zone; Cascade Range from Washington to northern Oregon; Rocky 
aot from Rite oie to New Mexico and Utah. Type locality: “‘Rocky Mountains of Colorado.” July— 
12. Solidago multiradiata Ait. Alpine Goldenrod. Fig. 5501. 
Solidago multiradiata Ait. Hort. Kew. i 218. 1789 
Solidago corymbosa Nutt. Trans. Amer. Phil. Soc. ve 7: 328. 1840. Not Poir. 1817, nor Ell. 1823. 
3 ide ago virgourea var. multiradiata Toe. & Gray, Fl. N. Amer. 2: 207. 1842. 
Solidago scopulorum A, Gra y Pet an: Acad. 17: 191. 1882. 
Aster eniradiates he ze, Rev. Gen. 2 An 
Solidago ciliosa Greene, iss Lae Ae 
Solidago humilis f. glacialis ee oe ae eo ge 50: 215. 1903. 
Solidago scopulorum A. Nels. Bot. Gaz. 37: 264. 
Solt eg algida Piper in Piper & Beattie, Fl. Nor thw. Coast 365. 1915. 
Solidago custckit Piper, Proc. Biol. Soc. Wash. 29: 1 916. 
Stems erect from a rather short woody ae ome or branching caudex, 0.5-4 dm. high, pilose 
or pilosulose at eat above. Basal leaves oblanceolate to elliptic, obtuse or esc acute, ser- 
rate or crenate-serrate above to subentire, mostly 2-10 cm. long, 5-18 mm. wide, scabrid-mar- 
n rwi u 
ined, tapering a ciliate p , othe e glabrous; cauline leaves spatulate to lanceolate, 
usually acute, sessile, mostly entire, ciliate at least toward base ds few to ra umerous, 
loose or ly dense termi co - some axillary clusters; involucre 
. high, the phyllaries linear to lance-linear, ac minate, not much imbricate, 
a 
thin, more or less eee a, ray-florets commonly 13, ‘astincly” excepting the 13-34 disk-florets ; 
achenes pase ay? 
Sunny y places in the high mountains, Boreal Zone; in the Pacific States from Wa shington 
south thr eek y ods es psd southern Sierra Nev ada, California; also Ala ska and adjacent Siberia, east to Labrador, 
south through the Rocky Mountains to New Mexico "and Arizona. Type locality: Labrador. June—Se ept. 
78. PETRADORIA* Greene, Erythea 3: 13. 1895. 
stout ae tap 5 ow, rigid, hee -pointed, entire. Heads y oflaW all, 
erous, in ter at-topped co ele Involucre cylindric, 4-seriate, cate ly grad- 
uate, the phyllaries ees stramineo , in 4 or 5 vertical rows. Ray-florets 3, pistil- 
late, the achene 10-striate, sgl ba are Hoses 3-5, staminate, the achene undeveloped. 
di 
Pappus of ray and di é ore umerous, very slender, stramineous bristles. [Name from the 
Greek, meaning Ek. 8 olde 
< oeiinern United States. It appears to combine the characters of Chrysothamnus 
and Laptesapee 
1. Petradoria pumila (Nutt.) Greene. Rock Goldenrod. Fig. 5502. 
Chrysoma pumila Nutt. Trans. Amer. Phil. Soc. II. 7: 325. 1840. 
neueeae ae Torr, & Gray, Fl. N. Amer. 2: 210. 1842. Not Crantz, 1766. 
ev. Gen, PLT: 318. 1891. 
Petradoria pipe Greue, ra 3= 13. 995 
Blake, Contr. U.S. Nat. sak 25: 540... 1925. 
Rather bes flat- ie plant with numerous simple, = leafy stems from the og < “er 
gla 
caudex, 1.5-2.5 dm. high, brous, resiniferous, light green. Leaves d a crowded in basal 
rosettes, somewhat roles on stems, obscurely punctate, scotia ntly 3-5-n a the basal nearly 
linear to oblanceolate on very slender setigiee, cm. we 3-7 mm. = e, the cauline sessile 
ract-like toward the inflorescence ; involucre 5.5-8 mm. high, about 2 m. wide ; 
an oming b 
pag a ong to lanceolate, obtusish to acu ete apiculate, more or less carinate, wit ith 
ithou mewhat thickish green ce ligules 2 ane . long; ray-achenes somewhat flattened, 
pelo ie Gitte d from the undeveloped disk-achen 
Dry stony hillsides, Upper ... Zone; occasional on siiiieias of eastern Mojave Desert, San Ber- 
Hs Mp 0. County, ee wat Eeon eastward across Arizona and Nevada to Texas and Se ceniciy. dad locality: 
“In situations, on shelvi g rocks toward the western declivity of the Rocky Mountains.” July— 
* Text contributed by David Daniels Keck. 
