Aloe Grace, Klopper, Smith, Crouch, Figueiredo, Rønsted & Wyk, 2013, s. str.
Creators: name: Grace, Olwen M.
name: Klopper, Ronell R.
name: Smith, Gideon F.
name: Crouch, Neil R.
name: Figueiredo, Estrela
name: Rønsted, Nina
name: Van Wyk, Abraham E.
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Asparagales
Xanthorrhoeaceae
Aloe

description: Key to Aloe s. str. and its segregate genera   
 1. Dichotomously branched trees or large shrubs; leaves unspotted; dried leaves not persistent; flowers cylindrical to cylindric-ventricose, without a pronounced constriction above a bulbous basal swelling; perianth segments connate in lower half to almost free; mainly southern Africa, with an outlier species in Somalia........................................... 2   
 - Not dichotomously branched trees or large shrubs; leaves variously spotted to unspotted; dried leaves persistent or not; flowers variously shaped, with or without a pronounced constriction above a bulbous basal swelling; perianth segments variously connate to free; widespread in sub-Saharan Africa, Arabia, Madagascar and western Indian Ocean Islands.............................................................................................................................................................. 3   
 2. Leaves rosulate, apex tapering; inflorescence branched; southern Africa, with an outlier species in Somalia............. ................................................................................................................................................................... Aloidendron    
 - Leaves distichous, apex rounded; inflorescence simple (unbranched); Western Cape, South Africa (Cape Floristic Region).............................................................................................................................................................. Kumara   
 3. Plants several-stemmed, shrubby or climbing; leaves spirally arranged, cauline dispersed, sheathing, separated by distinct internodes, unspotted; inflorescence usually simple; flowers cylindrical to slightly clavate or subventricose, sometimes slightly narrowed above the ovary, but without a pronounced constriction above a bulbous basal swelling; perianth segments ± connate; South Africa (mainly Western and Eastern Cape), with one species just entering Swaziland................................................................................................................................................... Aloiampelos   
 - Plants acaulescent or with simple or branched stems; leaves rosulate or distichous, seldom cauline dispersed, usually not separated by distinct internodes, variously spotted to unspotted; inflorescence variously branched or simple; flowers variously shaped, with or without a pronounced constriction above a bulbous basal swelling; perianth segments variously connate to almost free; widespread in sub-Saharan Africa, Arabia, Madagascar and western Indian Ocean Islands.......................................................................................................................................................... Aloe
description: Published as part of Grace, Olwen M., Klopper, Ronell R., Smith, Gideon F., Crouch, Neil R., Figueiredo, Estrela, Rønsted, Nina & Van Wyk, Abraham E., 2013, A revised generic classification for Aloe (Xanthorrhoeaceae subfam. Asphodeloideae), pp. 7-14 in Phytotaxa 76 (1) on page 8, DOI: 10.11646/phytotaxa.76.1.2, http://zenodo.org/record/5066711