Tuesday, May 13, 2014

Re: [bamboo-plantations] Oxytenanthera abyssinica [Bindura} flowering

Gigantis Bamboo plantation

From Betty Shor's Flowering records.
 

Oxytenanthera abyssinica

   1885:  Indonesia, New Guinea (USNH 1259894); collector W. Bauerlen.

   1915:  Gambia, Upper River (USNH 2382133); collector unknown.

   1922, Jan.:  Central African Republic (USNH 1815655); collector G.M.P.C. Le Testu.

   1924, July:  Zimbabwe, Gatoma (USNH 3022292); collector unknown.

   1925, Jan.:  "Rhodesia" (USNH 3022293); collector unknown.

   1927, April:  Uganda, Bulugenyi (USNH 1389447); collector J.D. Snowden.

   1930:  Nyasaland [Malawi]:  McClure, The Bamboos, 1966, pp. 276-277, quotes a local source that seeds obtained from the Forestry Department produced a few seedlings that bore seeds for three successive years, and those plants survived.  The individual planted each year's seeds (only 1 percent viability), which did the same thing.  Local people considered this species to have a flowering cycle of 30 years.

   1931, Jan.:  Angola, Baixa da Cassange (USNH 1526564); collector __ Gossweiler.

   1938, Oct.:  Ghana, Gambaga (USNH 1751619 and 1751620); collector C. Vigne.

   1944, Oct.:  Mozambique, Rio Mossurize e Massangena (USNH 2682099); collector F.A. Mendonca.

   1946, Oct.:  Guinea-Bissau (USNH 2682106); collector __ Jailho.

   1947, March:  Zaire, Katanga (USNH 2913877); collector A. Schmitz.

   1950, Nov.:  Malawi, (Zomba) (USNH 2181238); collector P.O. Wiehe.

   1954, May:  Burundi, Lac Mosso (USNH 2823580); collector A.R. Christiaensen.

   1959, Jan.:  Zambia, Kapatomoyo (USNH 3000875); collector N.K.B. Robson.

   1959, Nov.:  Nigeria, Nassaguta (USNH 2305267); collector F.R. Fosberg.

   1961, April:  Zimbabwe, Umtali (USNH 2464180 and 2564846); collector N.C. Chase.

   1961, June:  Sudan, Equatoria (USNH 2381951); collector J.K. Jackson.

   1965, Jan.:  Zambia, Chilanga (USNH 2463999); collector R.M. Lawton.

   1966, Aug.:  Malawi, Nichisi District (USNH 3027510); collector S. Zimba.

   1997:  Zambia; (e-mail from Ramanuja Rao of 5 Aug. 1997):  said that mass flowering had occurred; "deprived large numbers of people of their livelihood."

   2000, July: Mozambique (Bamboo Bulletin [Australia], vol. 6, no. 2, July 2004, p. 11): reported by Victor Brias (no details).

 

If someone would like to help me get her 186 pages of flowering data online please contact me for more information.

 

 

Sent: Tuesday, May 13, 2014 2:08 AM
Subject: [bamboo-plantations] Oxytenanthera abyssinica [Bindura} flowering




Hi - I have been attempting research the phenology of different populations of Oxytenanthrea abyssinica across its range in Sub-Saharan Africa for some time with very little success. This species has a huge range with several distinct geographic populations, many with seemingly distinct flowering cycles. eg. 7 yrs to 28 yrs (depending on population/locality).

This is of course of interest in the plantation context because of potential seed availability of O. abyssinica - Bindura bamboo - across its range at different times. And, anecdotally - different populations have slightly different morphological as well as phenological characteristics. e.g. culm diameter/length/number.

Are there any group members with information on historical/current flowerings in their area of interest, or any locality in fact. It could be interesting to build a clearer picture of what is happening with this interesting species/species complex.
 




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Posted by J3nn at 8:04 PM