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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HOME >Cryptocoryne ferruginea var.sekadauensis

Cryptocoryne ferruginea Engler var. sekadauensis Bastmeijer, Kishi, Takahashi, Wongso & Jacobsen

(Document service)

In the past few years a number of collections were made near Sekadau, West Kalimantan province in Indonesia. A green leaved plant with rather narrow leaves, strongly resembling C. ideii and a plant with brown, wider leaves. The spathe of both is not to distinguish, quite different from C. idei. The green plant was fruiting, the pollen fertility near 100%. The brown plant did not fuit, the pollen fertility near 0% (zero) and is regarded as an unnamed hybrid.

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A bridge over the small tributary of the Kapuas River near Sekadau. The water level is low in the dry season.
photo Wongso

Note the steep, bare banks of the stream, The water level may rise up to two meters during during the monsoon season.
photo Takahashi

Close-up of a patch of Cryptocoryne ferruginea var. sekadauensis.
photo Takahashi

A big stand of Cryptocoryne ferruginea var. sekadauensis growing partly submerged. This will probably become fully emerged later in the season.
photo Takahashi

An uprooted plant of Cryptocoryne ferruginea var. sekadauensis with spathe and fruit.
coll. NT 0404
photo Takahashi

The brown-leaved hybrid plant is found more upstream. The spathe is the same as Cryptocoryne ferruginea var. sekadauensis.
coll. Kishi 'brown4'
photo Kishi

A close-up to the brown leaved plant.
coll. Kishi 'brown2'
photo Kishi

Even further upstream Cryptocoryne fusca is found.
photo Takahashi

Spathe of Cryptocoryne ferruginea var. ferruginea from Bonti with a thick tail and mostly open
coll. SW-09x, cult. B 1329

Spathe of Cryptocoryne ferruginea var. sekadauensis with a treadlike tail.
coll. SW 0905, cult. B 1318

Limb of the spathe of Cryptocoryne ferruginea var. ferruginea is mostly wider opened.
coll. SW-09x, cult. B 1329

Limb of the spathe of Cryptocoryne ferruginea var. sekadauensis.
coll. SW 0905, cult. B 1318

A longitudinal section of the kettle of var. ferruginea ...
coll. SW-09x, cult. B 1329

... and of var. sekadauensis
coll. SW 0906, cult. B 1319

Spathe of var. ferruginea (left) and var. sekadauensis.
coll. NT-BO2 / NT-SK2
photo Wongso

Var. sekadauensis cultivated in leaf mould of the beech tree.
coll. NT 0404, cult. NJ
photo Jacobsen

Herbarium sheet of var. sekaduaensis with spathe and fruit.
coll. NT 0404 (SK2)
mount by Takahashi

First flowering of Cryptocoryne ferruginea var. sekadauensis in cultivation.
coll. SDU-01
photo Kishi

Distribution of Cryptocoryne ferruginea var. sekadauensis

Distribution of Cryptocoryne ferruginea var. ferruginea

Cryptocoryne ferruginea var. sekadauensis is easy to cultivate emerged in a pot with a mineral soil with some leaf litter or half submerged in leaf litter of for example the beech tree. It is unknown if this plant is suitable for the standard (hard water) aquarium.

December 2013

Literature. (see more at the var. ferruginea page)

Bastmeijer, J.D., H. Kishi, N. Takahashi, S.Wongso & N. Jacobsen, 2013. Eine neue Varietät der Cryptocoryne ferrruginea Engl. von Sekadau, West Kalimantan, Indonesien. Aqua-Planta 38(3): 84-93.(Document service)
Bastmeijer, J.D., H. Kishi, N. Takahashi, S.Wongso & N. Jacobsen, 2013. A new variety of Cryptocoryne ferrruginea Engl. from Sekadau, West Kalimantan province, Indonesia. The Aquatic Gardener 26(4): 33-38.