December 12, 1908 79 
and especially Achillea lanulosa give much white, Commelina 
_dianthifolia a little sparkling blue, Asclepias tuberosa and Pseu- 
docymopterus montanus purpureus very occasional splotches of 
dark purple, the Geranzum already mentioned an abundance of 
tose-pink, while 1/oxarda citriodora furnishes to the feast of the 
senses an all-pervading perfume. 
A large number of species take particularly to, the sunny 
slopes of stony knolls. Among these are Anthericum Torreyt 
and Linum neo-mexicanum, Verbesina longifolia and Viguiera cor- 
difola, the latter often with great tubers of stony hardness; Solt- 
dago Bigelovi Wrights,* and Pseudocymopterus montanus ten- 
utfolius, all yellow; Szlene laciniata Greggit, with deep, soft, 
fleshy roots, furnishes the red, Erigeron neo-mexicanus the white, 
Gilia Pringlet and Hedeoma hyssopifolia the blue; Carduus floc- 
cosus is present with the usual thistle hue; the new species of 
Allionia, A. melanotricha of the deeper soil, and A. pratenszs of 
the tops of rocky knolls, give shades of magenta. The latter 
habitat is also affected by the somewhat rare Hreracium Fend- 
lert discolor, the more common Guaphalium decurrens, and 
again infrequently, by a little new Seneczo with handsome white- 
woolly basal rosettes. A group of papilionaceous creatures also 
sink their deep and often tuberous roots among the boulders of 
these warm exposures. Such are Phaseolus Wright, Cologa- 
nia longifolia with its radiating leaflets and flowers of a royal 
purple shade, the delicate little Phaseolus parvulus with bulb- 
ous root, Mezbomia arizonica of the deeper soil, and JZ. Gra- 
hami which clusters preferably about the larger rocks. 
On opposite aspects, on the generally well shaded northerly 
slopes that had supported a forest of Prxus strobiformis, Pseudo- 
tsuga taxifolia, and the beautiful Adzes concolor, a quite differ- 
ent set of plants may be found, Here are the heavy, smooth, 
gold-crowned tussocks of Dugaldea Hoopesit, Senecio eremoph- 
wus and Solidago Bigelovii, flaunting similar colors; more de- 
*This variety ought certainly to have specific rank, as it and Solidago Big: 
elovii proper here have neither in habit nor habitat anything in common. 
