76 Rhodora [May 
and plate call for a glabrous form of C. Crus-galli with rather broad 
and somewhat acute-pointed leaves. The form occurring at Port 
Huron, Mich., and Windsor, Ontario (C. attenuata Ashe) exactly 
fits this plate. It is to be noted that M. prunifolia Poiret originally 
came from Canada. Furthermore as C. Crus-galli is an extremely 
rare form in Canada, this southern Ontario region being the only 
place where it is known to occur native, the evidence seems very clear 
that this particular form is the original of var. prunifolia. Unfortu- 
nately the name prunifolia after Poiret's time was transferred both in 
botanical gardens and in literature to a broad-leaved form of C. Crus- 
galli with pubescent leaves and corymbs (see for instance DeCandolle, 
Torrey and Gray, еіс.). 
C. Crus-galli X macracantha, n. hybr. Certain broad-leaved indi- 
viduals with foliage as in C. Crus-galli, var. prunifolia, the corymbs 
pubescent, the calyx-lobes serrate, the nutlets 2-3, their pits varying 
from shallow to deep, have all the appearance of being natural hybrids 
between these two species. (C. persimilis Sarg.; C. prunifolia of 
European gardens, in part.) — Occasional. 
C. BERBERIFOLIA Т. & G., var. Engelmanni (Sarg.), n. comb. 
C. Engelmanni Sarg. Bot. Gaz. 31: 2 (1901). 
C. cortina Chapm., var. sordida (Sarg.), n. comb. С. sordida 
Sarg. Bot. Gaz. 33: 114 (1902). 
C. COLLINA Chapm., var. Lettermani (Sarg.), n. comb. C. Letter- 
mani Sarg. Bot. Gaz. 31: 220 (1901). 
C. APPOSITA Sarg., var. Bissellii (Sarg.), n. comb. С. Bissellii 
Sarg. Rhod. 5: 65 (1903). 
The name C. cocciNEA has been applied to many different plants 
both by Linnaeus himself and by later authors. Linnaeus, Sp. PI. 
ed I, 1: 476 (1753), thus describes C. coccinea: — 
"CRATAEGUS folis ovatis repando angulatis serratis glabris. 
Hort. cliff. 187 [1737]. Hort. Ups. 126 [1748]. Стоп. virg. 
54 [1739]. Roy. lugdb. 272 [1740]. 
Mespilus, apii folio virginiana spinis horrida, fructu amplo coccineo. 
Pluk. Alm. 249. t. 46. f. 4 [1691]. 
Mespilus spinosa s. Oxyacantha virginiana maxima. Angl. 
hort. [Catalogus plantarum....quae in hortis non procul a Lon- 
dino propagantur] 49. 4. 13. 7. 1 [1730]. e 
Habitat in Virginia, Canada. 
Variat cum validis spinis lateralibus & absque spinis.” 
