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TIIE JOURNAL OF BOTANY 
what generalized. He was merely representing in 17th century style 
the more obvious floral features of a new genus, not, like Bureau, 
figuring with scrupulous accuracy the minuter distinctive details of 
allied genera. The proper tube of the corolla, for instance, at 
maturity is not absolutely included in the calyx, as Tournefort figures 
it, in either species. Figure C of Tournefort, on which Mr. Sprague 
relies in his remarks about the disk, can he referred to one species as 
well as to the other. 
One point not mentioned at all by Mr. Sprague seems to indicate 
definitely that Tournefort’s illustrations represent Bignonia radicans , 
and that this should in consequence be regarded as the type of the 
genus Bignonia. The calyx, as is clearly shown in figure AD, and 
somewhat less clearly in figure D, is 5-toothed with distinct acute 
teeth. This is precisely the calyx of B. radicans. In B. capreolata , 
on the other hand, the calyx has a nearly or quite truncate margin, 
with the teeth either very short, blunt, and obscure, or represented by 
minute mucronulations. This, in my opinion, is the only feature in 
Tournefort’s figures which is definitely assignable to one of the two 
species concerned and not to the other, and it is a feature so definite 
and so unlikely to be misrepresented that the figures can be relied 
upon for the determination of the species concerned. 
It should be noted that, while the genus Bignonia is taken in 
Dalla Torre and Harms’s Index Siphonogamarum in the sense given 
it by Bureau and Schumann, the Bafinesquian synonyms there given 
belong to other genera. 
As stated by Behder and by Sprague, the proper name for the 
genus typified by B. unguis-cati is Doxantha fliers (1863). Miers’s 
genus was a somewhat heterogeneous one, but he stated definitely that 
the type was B. unguis-cati. The definitely known species are the 
following:— 
Doxantha dasyonyx Blake. — Bignonia dasyonyx Blake in 
Contr. Gray Herb. n. ser. lii. 94 (1917). 
Doxantha exoleta (Veil.) Miers in Proc. Boy. Hort. Soc. iii. 
190 (1863).— Bignonia exoleta Yell. FI. Flum. 248 (1825) ; Jeon, 
vi. pi. 30 (1827).' 
Doxantha unouis-cati (L.) Behder in Mitt. Deutsch Dendr. 
Ges. 1913, 262 (1913).— Bignonia unguis-cati L. Sp. PI. ii. 623 
(1753). Doxantha unguis Miers, /. c. (1863). Bignonia calijornica 
Brandegee in Zoe, v. 170, 1903. 
S. F. Blake, 
U.S. Dept, of Agriculture, Washington. 
In my supplementary note on the type-species of Bignonia (Journ. 
Bot. 1922, 363) six characters of the calyx, corolla, disc, and ovary 
were mentioned in support of the view that Bignonia , Tourn. Inst, 
t. 72, figs. A-D, represents B. capreolata , not B. radicans. Dr. Blake 
does not deny that these characters are observable in Tournefort’s plate, 
but summarily dismisses them as “minor details.” His statement 
that “ figure C . . . . can be referred to one species as well as to the 
other” is surprising—to put it mildly. It may suffice to mention in 
