Disocactus, Lindley, 1845

Korotkova, Nadja, Borsch, Thomas & Arias, Salvador, 2017, A phylogenetic framework for the Hylocereeae (Cactaceae) and implications for the circumscription of the genera, Phytotaxa 327 (1), pp. 1-46 : 12

publication ID

https://doi.org/ 10.11646/phytotaxa.327.1.1

persistent identifier

https://treatment.plazi.org/id/251987B3-CA36-FF9B-FF4B-1650FE46F8BF

treatment provided by

Felipe

scientific name

Disocactus
status

 

The Disocactus View in CoL clade

The clade that includes the nomenclatural type D. biformis (Lindley) Lindley is supported with 1 PP, 78% MLBS, 86 % JK. This confirms the results of Cruz et al. (2016), who recovered a Disocactus clade with the same composition with higher support from 96% BS and 96% JK, and 1 PP from Bayesian Inference (ML not calculated therein). Resolution and node support within Disocactus are generally low.

Disocactus View in CoL was originally described by Lindley (1845) for D. biformis View in CoL and was characterized by dimorphic stems and small flowers. The widely-used concept of Disocactus View in CoL was established by Barthlott (1991), who amplified the genus by including the genera Aporocactus View in CoL , Nopalxochia Britton & Rose , and Heliocereus (A. Berger) Britton & Rose, all with diurnal, large, bright red or pink flowers, to Disocactus View in CoL . In this sense, Disocactus View in CoL is polyphyletic, since Aporocactus View in CoL is resolved outside and three Epiphyllum species (see above) are resolved within Disocactus View in CoL with high confidence. This is also consistent with the results obtained by Cruz et al. (2016), who also already published the necessary new combinations for these Epiphyllum species under Disocactus View in CoL . Disocactus crenatus (Lindley) M.Á. Cruz & S. Arias (2016: 157) View in CoL has diurnal flowers, what had always appeared as unusual within the exclusively night-flowering Epiphyllum View in CoL . Flowers of D. crenatus View in CoL and D. anguliger (Lemaire) M.A. Cruz & S. Arias (2016: 157) View in CoL have in fact stamens inserted in two series, a character that is common in Disocactus View in CoL such as the flowers that open in the evening and last for several days. Furthermore, both species can hybridize with other species of Disocactus View in CoL , but not of Epiphyllum ( Bauer 2009) View in CoL .

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Caryophyllales

Family

Cactaceae

Loc

Disocactus

Korotkova, Nadja, Borsch, Thomas & Arias, Salvador 2017
2017
Loc

Disocactus crenatus (Lindley) M.Á. Cruz & S. Arias (2016: 157)

M. A. Cruz & S. Arias 2016: 157
2016
Loc

D. crenatus

M. A. Cruz & S. Arias 2016
2016
Loc

D. anguliger (Lemaire) M.A. Cruz & S. Arias (2016: 157)

M. A. Cruz & S. Arias 2016: 157
2016
Loc

Disocactus

Lindley 1845
1845
Loc

Disocactus

Lindley 1845
1845
Loc

Disocactus

Lindley 1845
1845
Loc

Disocactus

Lindley 1845
1845
Loc

Disocactus

Lindley 1845
1845
Loc

Disocactus

Lindley 1845
1845
Loc

Disocactus

Lindley 1845
1845
Loc

Disocactus

Lindley 1845
1845
Loc

Epiphyllum

Haworth 1812
1812
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