[Vor. 4 
46 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
6. T. Hugeri Small, Fl. Southeastern U. S. 277. 1908. 
This plant differs from T. Underwoodii in having leaves 
suborbicular to broadly ovate, abruptly obtuse-pointed, petals 
oblong-lanceolate to spatulate, and anthers not subsessile. 
In rich woods, North Carolina and Tennessee to Florida. 
7. Т. luteum (Muhl.) Harb. Biltm. Bot. Studies 1: 21. 1901. 
Plate 7, fig. 2. 
T. sessile var. luteum Muhl. Cat. 38. 1813. 
This is distinguished from T. Underwood by the yellow 
eolor of the petals, ovary, filaments, and anthers; otherwise 
it is remarkably similar to that species. Intergrading forms 
which are probably hybrids occur with petals ranging from 
dark purple to greenish. Forms also occur with yellow petals 
and purple anthers, or the petals may be purple and the 
anthers yellow, or only the connectives of the anthers may 
be purple. These are perhaps independent Mendelian dif- 
ferences which are constantly being interchanged by crossing 
in the population. The petals also vary in shape, and there 
are at least two distinct races in this regard, as indicated by 
the specimens examined. The petals of the following speci- 
mens are rather narrowly lanceolate, 5.6 em. long, 1 cm. wide, 
with anthers 2 mm. wide. 
Knoxville, Tenn., April, 1898, 4. Ruth 150, four specimens; 
same locality, April, 1897, A. Ruth, two specimens, cotype. 
In woods and along streams, North Carolina and Tennessee. 
The species is said to occur abundantly near Kingston, Ten- 
nessee. 
7a. Var. latipetalum Gates, n. var. Plate 7, fig. 3. 
The following specimens differ from the species in having 
petals which are oblong-obovate, 3-4.4 em. in length, 1.4-2 em. 
wide, and purple anthers scarcely exceeding 1 mm. in width. 
Clemson College, Oconee Со., S. C., April 7, 1906, Н. D. 
House 1789, two specimens. 
Two other specimens on the above sheets represent yet a 
third type, having leaves broadly oval, deeply mottled, and 
1Gray, A. Bot. Gaz. 5:63. 1880. 
