170 AMERICAN CODE OF BoTANICAL NOMENCLATURE 
ExAMPLes. — Hookerianus ; elites vulgaris ; heterophyllus ; malvi- 
cola ; ahi: Tuna; Engelmanni; Sonorae; Trifolit. 
Canon 6. Generic and subgeneric names consist of Latin or 
Latinized substantives, or equivalent terms. 
EXAMPLES. — Rosa; Convolvulus; Hedysarum; SaaS Liguidam- 
bar; Couroupita; Tsuga ; Gloriosa ; Impatiens ; Mani 
Canon 7. Names for subtribes, orders, and cares groups, 
are formed from names of component genera. 
(2) For names of tribes add -eae, of families -aceae, of ord- 
ers -ales, to the stem of the generic name. 
ExampLes.—Roseae; Rosaceae; Rosales. 
(6) For names of subtribes add -anae, of subfamilies -atae, 
of suborders -ares, to the stem of the generic name. 
EXAMPLES.—ARosanue ; Rosatae; Rosares. 
Canon 8. Names for subclasses and higher groups consist of plu- 
ral Latin or Latinized substantives. 
ExamPLrs.—Monocotyleaones ; Angiospermae ; Pteridephyta. 
Section IIT. Publication of Names. 
Canon g. A specific or subspecific name is published when it has 
been printed and distributed with a description (or in palaeo- 
botany a figure), or with a reference to a previously pub- 
lished ede a 
EXAMPLES.-—Coursetia arborea Griseb. Fl. Brit. W. Ind. 183 (1859), is 
published atts a description; Cynanchum njvale Nym, Syll. Fl. Eur. 108 
eh is fgrgar with a reference to the previously dsb inne 
7 ae ag coannenirel Whitei Ward 
6. pi. 7. 5, 6 (1885), a fossil species, is abraliie with a ‘teak 
but aaa a description 
(a) In the transfer . a species from one genus to another, 
the original specific name is retained, unless the result- ; 
ing binominal has been previously published. 
EXAMPLES.— Bromus pipes L. sg Pl. 77, is Festuca eee 
(L.) Vill. Hist. Pl. Dauph. 2: 110 (1787); Aram ope L. Sp. 
Pl. 965, is to be known as Arisaema triphyllum (L.) T LN. Yee 
239 (1843), not as Arisaema atrorubens Blume, Reraphia ¢ 1; 1835) 3 
urus Sassafras L. Sp. Pl. 371, is to be known as Sassafras Sassafras f 
(L.) Karst. Deutsch. Fl. 505 (1881), not as Sassafras officinale Nees & 
erm. . Med.-pharm. Bot. 2: 418 (1831); however, Schoenus ‘ 
pusillus Sw. hos: Gen. & Sp. Pl. 20 (1788), when transferred to A’yn- 
chospora, is not to be known as Rynchospora pusilla (Sw. ) Griseb. Ser: 123 
(1857), because prior to 1857 the same binomial had been used for an- 
other species, Xynchospora pusilla Chapm. (1849). 
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