84 THE AMERICAN MIDLAND NATURALIST 
D. minutiflorum is chosen in order to conserve the generic 
name Brachyelytrum. A careful examination of Michaux’s 
generic description and application of same to his two species 
shows that “either” are not “equally eligible as the type.” 
Michaux says: “Valvis—subulato-lineatribus,  carinatis,” 
which is characteristic of his first species but not at alt so of 
his second. ' Therefore as his generic description is more ac- 
curately descriptive of his first species, D. aristosum, than of 
‘ his second, the former must be considered as the type of his 
cenus. To arbirtrarily adopt that species as a generic type 
which will permit of the reduction of an older name in order to 
conserve a later name is contrary to all botanical rules and 
codes, except, of course, where rules or codes specifically name 
such exceptions. Another reason why D. aristosum should be 
considered as the type, is that when D. minutiflorum, not con- 
sidered as the type, is that when D. minutiflorum, not con- 
generic with the other, is removed to its proper genus, Muhl- 
enbergia, published 12 years earlier, D. aristosum is the only 
species left in the genus and consequently, the type. Brach- 
yelytrum Beauv., Ess. Agrost. 39, pl. 9, f. 2. (1812) must 
give way to the older Dilepyrum of Mx. under both the Vienna 
Rules and the American Code, Cannon 15 of which requires 
that the 1st species, D. aristosum, be considered the generic 
type. 
Gardenia, Colden, 1756; Boehmer in Ludw. Def. 292, 293 
44760): Triadenum-. Rat.,- Med.--Rep. (2) V2" 3527 (1 s06)— 
Elodea Adans, ex Juss., Gen. 255 (1789) and ex Pursh, FI. 
Am. Sept. II 360, 379 (1814). Gardenia Ellis in philos. 
Trans. LI pt. 2, 935 (1761) becomes Gardena Adans. Fam. 
II 20 (1768). 
Three species are known, native of eastern N. America, one 
exending through British America into n. e. Asia. They are— 
as follows: 
Gardenia Virginica (Linn) n. comb. Hypericum Virgini- 
cum Linn, Sp. Pl. (2) 11 1104 (1763). U.5S., east of the Rocky 
Mountains, n. and w. into Asia. 
Gardenia longifolia (Small) n. comb. Triadenum longifol- 
ium Small in Bull. Torr. Bot. Club XXV 140 (1898). Florida 
and Alabama, northward to Kentucky. 
.) 
