15 



more have thus far been noticed. * * * Our black oak hybrids 

 are the following : 



Q. Caiesbaei x aquatica ; Q, stnuaiay Walt. It is quite probable 

 that in the tree observed by Dr. Mellichamp, * * * near Bluff- 

 ton, S. C, we meet with Walter's obscure and long ignored species. 



Q. Caiesbaei X laurifolia^ a late discovery of Dr. Mellichamp, is 

 found in the same neighborhood. 



Q. imbi'icaria x nigra ; Q. trideiitata^ Eng. in Hb. A single tree, 

 rather small * * * vv^as found by me in the autumn of 1849 on 

 the hills 6 miles east of St, Louis. 



Q. imbricaria xpalusiris was" observed by me a few years ago, 8 

 miles west of St. Louis. 



Q. imbricaria x coccinea was first described and figured by Nuttall 

 about thirty years ago under the name of Q. Leana. The original 

 tree was discovered by Mr. T. G. Lea near Cincinnati, and is still in 

 existence. 



Q. ilicifolia x coccinea^ Robbuis, discovered by Dr. Robbins at Ux- 

 bridge, Mass., in 1855." 



Quercus heterophylla, Michx., regarded by Dr. Engelmann as a 

 hybrid between Q. Fhellos and coccinea^ or some other oak with 

 deeply lobed leaves, is considered by Mr. I. C. Martindale,* who has 

 given the matter much careful study, to be worthy of specific rank, 

 and is excluded from the foregoing list. 



New Species of Compositae chiefly Californian. 



By Edward Lee Greene, 



ViGuiERA Parishti. — Shrubby, much branched and scabrous-his- V 

 pid ; leaves mostly opposite, an inch or two long, including the short 

 petiole, ovate, acute, the margins with a few coarse triangular teeth ; 

 flowering branches long and flexuose, nearly naked above, and 

 each bearing a single head ; involucre short, its scales ovate-lanceo- 

 late ; rays about 10; receptacle convex; bristle-like awns of the 

 pappus about equalling the finely ciliate akenes, and deciduous; the 

 mtervening scales apparently persistent, numerous and acute. 



Collected, at San Luis Rey, April, 1881, by the Messrs. Parish 

 (No. 963). 



Dr. Gray writes that he has the same from the Colorado Desert, 

 collected by Mr. W. C. Wright. ■ ' v/ 



i/Hemizonia (Hartmannia) Heermannl — Near H. virgata^ but 

 densely sHort-hirsute and very viscid-glandular throughout ; stem 1-3 

 feet high, parted below the middle into many graceful wand-like, 

 loosely racemose or racemose-paniculate branches ; cauline leaves an 

 inch or more long, linear, entire, those of the sterile branchlets ob- 

 long-linear, 2-3 lines long and crowded, of the flowering ones still 

 smaller, bract-like, ovate-oblong, scattered and more orlessappressed, 

 each tipped with a truncate gland which is nearly or quite sessile ; 

 heads of medium size ; rays 5-8, broad, 3-4-toothed, bright yellow 

 and showy; disk-flowers 10-15, their corollas glandular; fertile 



* Notes on the Bartram Oak, Qucrcti^ hetcroph^'lla, Michx., by Isaac C. Mar- 

 tindale, Canulen, 1880. 



