42:
69:
204:
A form usually designates a group with a noticeable morphological deviation. The usual taxonomic practice is that the individuals classified within the form are not necessarily known to be closely related (they may not form a
293:
McNeill, J.; Barrie, F.R.; Buck, W.R.; Demoulin, V.; Greuter, W.; Hawksworth, D.L.; Herendeen, P.S.; Knapp, S.; Marhold, K.; Prado, J.; Prud'homme Van Reine, W.F.; Smith, G.F.; Wiersema, J.H.; Turland, N.J. (2012).
297:
International Code of
Nomenclature for algae, fungi, and plants (Melbourne Code) adopted by the Eighteenth International Botanical Congress Melbourne, Australia, July 2011
41:
223:. There are theoretically countless numbers of forms based on minor genetic differences, and only a few that have particular significance are likely to be named.
128:. If more than three ranks are listed in describing a taxon, the "classification" is being specified, but only three parts make up the "name" of the taxon: a
374:
322:
Hamilton, C.W.; Reichard, S.H. (1992), "Current
Practice in the Use of Subspecies, Variety, and Forma in the Classification of Wild Plants",
305:
143:
The abbreviation "f." or the full "forma" should be put before the infraspecific epithet to indicate the rank. It is not italicised.
763:
258:
209:). For instance, white-flowered plants of species that usually have coloured flowers can be grouped and named (e.g., as "f.
367:
360:
68:
47:
51:
614:
243:
133:
99:
86:(Ravenscr.) Rehder has been created for these. However, if the plants are selectively propagated for the
46:
137:
50:
49:
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53:
768:
125:
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57:
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121:
52:
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331:
268:
248:
704:
690:
657:
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594:
589:
584:
578:
572:
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533:
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506:
237:
151:
35:
45:
383:
273:
232:
117:
61:
31:
30:
This article is about the formal taxonomic term in botany. For the use in zoology, see
295:
757:
74:
87:
716:
253:
17:
626:
497:
492:
483:
673:
652:
263:
240:, an informal rank used for a parasitic form adapted to a particular host
220:
91:
710:
343:
465:
449:
335:
78:
sometimes arise that have attractive silvery-blue foliage. The name
667:
352:
206:
129:
67:
40:
356:
219:
are sometimes named among plants that reproduce asexually, by
300:. Vol. Regnum Vegetabile 154. A.R.G. Gantner Verlag KG.
188:
Sarg. is a classification of a plant whose name is:
124:, which in turn is below that of species; it is an
44:
368:
64:. Intermediate minor rankings are not shown.
8:
34:. For the informal botanical grouping, see
375:
361:
353:
27:Taxonomic rank in botanical nomenclature
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7:
392:
25:
180:(Walter) Torr. & A.Gray var.
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401:
170:(Weidlich & Werderm.) Donald
606:
545:
194:(Walter) Torr. & A.Gray f.
94:name is generally used instead.
735:
724:
692:
681:
474:
456:
259:Plant variety (disambiguation)
1:
116:) is one of the "secondary"
164:Acanthocalycium spiniflorum
785:
29:
390:
58:biological classification
764:Botanical nomenclature
244:Trinomial nomenclature
100:botanical nomenclature
95:
65:
138:infraspecific epithet
71:
55:
312:Chapter I. Article 4
192:Crataegus aestivalis
177:Crataegus aestivalis
441:Infrakingdom/Branch
126:infraspecific taxon
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216:Formae apomicticae
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56:The hierarchy of
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269:Hybrid (biology)
249:Variety (botany)
134:specific epithet
120:, below that of
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455:Superdivision (
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238:Forma specialis
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152:Acanthocalycium
118:taxonomic ranks
62:taxonomic ranks
60:'s eight major
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330:(3): 485–498,
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274:Race (biology)
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233:Form (zoology)
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32:Form (zoology)
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18:Form (biology)
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424:/Superkingdom
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146:For example:
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141:
139:
135:
131:
127:
123:
119:
115:
111:
107:
106:
101:
93:
89:
85:
82:Rehder forma
81:
80:Abies procera
77:
76:
75:Abies procera
72:Seedlings of
70:
63:
59:
43:
37:
33:
19:
733:
732:
721:
689:
678:
603:
542:
471:
453:
409:
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327:
323:
317:
296:
288:
215:
214:
210:
203:
195:
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185:
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168:klimpelianum
167:
163:
158:klimpelianum
157:
150:
145:
142:
113:
109:
104:
103:
97:
88:horticulture
83:
79:
73:
632:Infrafamily
615:Superfamily
529:Subterclass
498:Microphylum
493:Infraphylum
488:Subdivision
450:Superphylum
154:spiniflorum
769:Forma taxa
758:Categories
717:Subspecies
658:Infratribe
641:Supertribe
590:Infraorder
573:Superorder
544:Division (
524:Infraclass
507:Superclass
473:Division (
436:Subkingdom
411:Subrealm (
280:References
254:Subvariety
182:cerasoides
723:Variety (
680:Section (
627:Subfamily
605:Section (
595:Parvorder
568:Magnorder
534:Parvclass
484:Subphylum
196:luculenta
186:luculenta
184:Sarg. f.
136:, and an
112:, plural
90:trade, a
691:Series (
674:Subgenus
653:Subtribe
585:Suborder
519:Subclass
264:Cultivar
227:See also
221:apomixis
132:name, a
92:cultivar
711:Species
430:Kingdom
400:Realm (
344:1222819
122:variety
734:Form (
621:Family
559:Cohort
554:Legion
466:Phylum
422:Domain
342:
304:
166:forma
114:formae
84:glauca
668:Genus
647:Tribe
579:Order
513:Class
340:JSTOR
324:Taxon
207:clade
198:Sarg.
130:genus
110:forma
736:bot.
725:bot.
693:bot.
682:bot.
607:zoo.
546:zoo.
475:bot.
457:bot.
413:vir.
402:vir.
302:ISBN
213:").
211:alba
105:form
102:, a
332:doi
160:or
156:f.
98:In
760::
338:,
328:41
326:,
140:.
738:)
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376:e
369:t
362:v
334::
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108:(
38:.
20:)
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