8 INTERNATIONAL RULES FOR BOTANICAL NOMENCLATURE 
demands, the connecting vowel is eliminated (e. g. calliantha, lepid- 
ant. oa The: connecting @ is legitimate only eke etymology de- 
mands (e.g. sath a rmis, from Carica, may be retained along with 
cariciformis, from — 
n fo eons specific names, botanists will do well to note 
the followinig recommendations : 
at (e) ~~ id very long names, “and those which are dificult to 
ron 
ig (6) ‘Avoid names which express a aladiedickdae common to all, or 
nearly all, the pees of a genus. 
(c) Av oid na: s taken from little known or very restricted 
cerren ps the notanyg be nagg ies _ = 
void, in the same genus which a me! much alike, 
Scale ‘fae which sor te on has in their last let 
é) Adopt unpublished names found i TagaNe Hers’ notes and 
herbaria, attributing them to the ae ise pete only when those 
concerned have approved the public 
void names which hay ee aad before in the genus, or 
in any closely allied genus, sin which have lapsed into synonymy 
(homonyms). 
Do not name a species after a person who has neither dis- 
covered, nor described, nor figured, nor in sr “ti studied it. 
(h) Avoid specific names formed of tw 
(?) Avoid names which have the sbisas casein? as the generic 
name 
* 
icle 27. Two species of the same genus cannot bear the 
same specie name, but the same specific name may be given in 
Sip 
loiiie: sfrabis spathulata DC. and a ae, ips 
are valid as two names of Crucifers ; but Ara lata Nutt. i 
Gray cannot be main ne ,on at a ren stipanoe 
of i — DC., a name previously given to another valid 
species ‘ 
Article 28, Names of subspecies and varieties are formed like 
specific names, and follow them in order, beginning with those of 
the highest rank. The same holds for subvarieties and 
slight or transient modifications of wild plants which receive a 
name, or numbers or letters to facilitate their arrangement. Use 
of a binary nomenclature for subdivisions of species is not ad- 
Examples: Andropogon ternatus subsp. macrothria (not Andro- 
pogon macrothria or Andropogon ternatus subsp. A. macy; othriz) ; ; 
Herniaria hirsuta var. diandra (not Herniaria diandra or Herniaria 
hirsuta var. H, diandra) ; forma nanus, forma maculatum. 
porcintrinis bat ie 
lade for t t] if 
equally 
to names of uabdiyisione oy species. These agree with he generic 
name when they have an adjectival oe (Thymus Serpylinmn. var. 
angustifolius, pill acris subsp. Friesianus). 
