16 



akenes black or nearly so, more or less tuberculate, and with a prom- 

 inent curved beak ; sterile ones half enclosed by the chartaceous 



chaff of the flat receptacle- 



Tehachapi Pass, Kern County, near Keene Station, abundant in 

 groves of Quercus Douglasii\ collected by Dr. Parry and the writer, 

 Sept. 9, i88t. 



An interesting discovery, as being a near relative of the peculiar 

 H. virgata. Gray, from which species it differs by its habit, pubes- 

 cence, sparse foliage, larger heads and dark tuberculate akenes. 



I distributed too early, a few specimens of this fine novelty under 

 the name H. parvifolia^ n. sp., and Dr. Gray, having seen one of 

 these, kindly informs me that a fragment in his herbarium, collected 

 by Heermann and referred by Durandto^. macradenia^ and another 

 collected by Rothrock (No. 176) and by that author referred to H. 

 ramosissima^ both of which Br. Gray had put in with H, vh'gata^ are 

 of this present species. At the suggestion of Dr. Gray I dedicate 

 the species to Dr. Heermann who first collected it, the name at first 

 proposed being hardly a distinctive one. 

 V Hemizonia (Hartmannia) Parryi. — -Simple below, corym- 



bosely branched above, rigid, a foot or two high, sparingly hirsute 

 and minutely glandular, the glands yellow, resinous, and nearly ses- 

 sile ; cauline leaves remotely pinnatifid or toothed, those of the 

 branches entire, linear-subulate, rigid and, with the long involucral 

 bracts, spinulose-tipped ; rays numerous, exceeding the disk, linear- 

 oblong, 2-toothed ; akenes black and smooth, the sterile ones of the 

 disk bearing a pappus of about 3 (rarely 4 or 5) narrowly-linear 

 chaffy scales which taper to a slender point and equal, or even ex- 

 ceed the corollas ; chaff of the convex receptacle thin, villous on the 

 margin, acute, obtuse, or sometimes with a resinous-glandular tip, 

 but never at all pungent. 



^ At the Calistoga Springs in the upper part of Napa Valley ; col- 

 lected by Dr, Parry and the writer June 30, 1881, and, again in July, 

 maturer and better specimens by Dr. Parry. Since this description 

 was written Dr. Gray has sent word that the species has long existed 

 in the Cambridge herbarium, being Dr. Torrey's No. 243 from Napa 

 Valley, and Bolander's No. 2614 from Clear Lake, and that it had 

 been referred as a variety to H, Fitchia^ Gray. 



In aspect it is almost precisely like H. pungens^ T. & G., from 

 which its fragrant, balsamic glandulosity, remarkable pappus, soft 

 chaff and black akenes abundantly distinguish it- 



r Hemizonia luzulaefolia^ DC,, var. lutescens, differs from 

 the ordinary, and hitherto only known form of the species in having 

 bright yellow leaves. It grows in great abundance toward the north 

 end of San Francisco Bay, in the vicinity of San Pablo, and at Valejo, 

 where it seems to altogether take the place of the white-flowered type. 



^ Hemizonia (Calycabenia) spicata.— Slender, a foot high, sim- 

 ple or branched, setose-hirsute ; heads sessile, spicately crowded on 

 the whole length of the stem and all the branches ; flowers white ; 

 ray-akenes densely clothed with long, appressed, villous hairs ; those 

 of the disk less silky and with a pappus of 10 unequal, subulate, awn- 

 pointed scales. 



