The Crypts pages~ by Jan D. Bastmeijer

by Jan D. Bastmeijer ~ 2016

Suwidji Wongso & Co.

These pages are on the cultivation and taxonomy of plants of the genus Cryptocoryne & Lagenandra (Araceae)

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C. ×batangkayanensis Ipor, Ørgaard & N. Jacobsen

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Already in 2004 Isa Ipor found an unknown Cryptocoryne in Western Sarawak what looked somewhat like C. ×purpurea from the Malay peninsula and gave it the working name "nothovar. sarawacensis" This latter plant proved to be a natural hybrid between C. cordata var. cordata and C. griffithii and is fully sterile. As var. cordata does not grow in Borneo at all, the close related C. grabowskii could replace, but C. griffithii is only known from southern Borneo and is not reported from Sarawak.
so it could not be

polled defect - hybrid with ??
2n=85?

as a hybrid between C. grabowskii and C. ferruginea var. ferruginea.

Click on the picture to get the full image (ca. 50 kB)

A stream near Bau with a big stand of C. ×batangkayanensis
photo Jacobsen

A close up of the same stream
photo Jacobsen

Another close up
photo Ipor

Ipor standing at the stream. Note
photo Wongso

ass
coll. NJS04-07c, cult. Jacobsen
photo Jacobsen

asa
as
photo Ipor

artificial hybrid between xxxxxx Jacobsen CyCy447 fer X gra
photo Jacobsen

Cultivated
coll. Ipor IBI06-1
photo Jacobsen

Cultivated
coll. Karlick Sara3, cult. SR396
photo Reitel

ass
coll. NJS04-07c, cult. Jacobsen
photo Jacobsen

C.×batangkayanensisknown from one stream in Sarawak

Cultivating half submersed is relative simple on a bottom of Fagus leaves.

July 2017

Literature.

Ipor, I.B., Ørgaard, M & Jacobsen, N., 2015. Cryptocoryne ×batangkayanensis (Araceae), a new hybrid from Sarawak. Willdenowia 45: 183 - 187. (Document service)
Jacobsen, N., J.D. Bastmeijer, I. Ipor, K.R. Munk, S. Wongso & M. Orgaard, 2016. Cryptocoryne ×batangkayanensis (Araceae) und Bemerkungen zu einigen anderen Hybriden. Aqua Planta 41:2: 54-66 (with English tranlation). (Document service)