138 PITTONIA. 
22." N. ATRACTYLOIDEs, Hook. & Arn. Bot. Beech. l. ¢.; 
"Egochloa atractyloides, Benth. Bot. Reg. l. c.: Gilia atracty- 
loides, Steud. Nom. i. 683; Gray, l. c. —Stout and low, with 
short branches paniculately arranged: leaves ovate-lanceo- 
late, rigidly coriaceous and in age reticulate, the margins 
beset with straight spinose-subulate teeth: segments of the 
calyx subulate, entire, erect, only moderately unequal : corolla 
narrowly funnelform, ? inch long, deep purple. 
Very common from the Sacramento valley to San Diego. 
Herbage purplish or fuscous, viscid and heavy-scented. In 
the more northerly districts, where this species reaches the 
territory of N., viscidula and N. pubescens (both of them 
heavy-scented) it hybridizes with them to such a degree that 
one does not know to which species of the three most of the 
specimens should be referred; and when these mongrel 
forms first began to come into our herbarium a few years 
ago, we named them, in manuscript, as a new species. We 
have more lately learned their genealogy, and have seen 
acres of San Joaquin and Sacramento plains occupied by 
them, with seldom a patch of the pure breed of either 
Species discoverable in that ground where they have met and 
commingled. 
23. N. FOLIACEA. Near the last, but more diffuse and 
leafy, leaves ampler, less coriaceous and of a lighter green, 
their segments not wholly spinose, but herbaceous below; 
segments of the calyx very unequal, 2 large, ovate-acuminate, 
spinose-tipped and more or less reeurved, 3 very small and 
only broadly subulate : corolla white, small, little surpassing 
the calyx : herbage scentless. 
Common at San Diego, according to Orcutt: also at 
Potrero, in the mountains eastward, June, 1884, D. Cleveland. 
Distinct, entirely so, from N. atractyloides with which it was 
confounded by the author of the Synoptical Flora. Not 
hybridizing with it even; and, being scentless, it indicates 
that chemical qualities (such as the eye cannot detect) may 
