Carnivorous plant enthusiast
- Aug 14, 2006
- Ontario, Canada
No, it does not specify distribution - though one would imagine that like any statistical bell curve, the majority of those specimens probably lies somewhere in the middle. I know that's a big leap of faith on my part, but all other things being equal (which is probably unlikely), one would expect it to be true.
Well..Especially in the case of pitcher plants, we can say that it may not be true. For instance, lets look at villosa. A few individual plants that manage to get a foothold at 1500-1600m ASL might be just outliers and the majority is in concentrated above 2500m. Outliers can greatly skew the bell curve hypothesis.
I did forget aristo and bosh. Let me know if there are others. I updated the chart:
How many think burbidgeae should be moved up to the highland category based on the criteria that would categorize it as such? I am still thinking intermediate, I have witnessed a crop burbidgeae seedlings grown in highland temps and intermediate. Intermediate outperformed highland over the course of several years. Also, it could be that the mean of burdbidgea populations are found in the 1600-1800 range right along side rajah.
@vraev ... by perplexed do you mean that pitopangi, tenuis, and klossi would not grown in the optimal temps of Day: 75-85° / Night: 55-65° F. I think that temp range would be perfect for these species. No?
Well...I think it has to be clearly defined whether the classification refers to "altitude" or "temperature range". By that I mean if you take macrophylla, this species is typically a highland-UHL, but from experience, it is waaay tougher than villosa in growing during the warmer summer months. N. villosa stops growth and starts yellowing, while N. macrophylla is unaffected. So clearly, species can have differences in tolerance to temperature variation. Personally, I think the classification should refer to the altitude. And that definition has to be made based on the median of population consensus.
With regards to burbidgeae... From what I read, its a well known fact tat highland species seediings greatly benefit from higher temps in early stages of its life. Have you found that adults grow better at intermediate as well? I understand your argument...another bit of evidence to this matter is from Joel's website:
source: http://www.nepenthesaroundthehouse.com/nburbid.htmIt seems that this species doesn't tolerate as low of temperatures as other highlanders. I would venture to guess that it does real well in slightly warmer conditions as an intermediate. I've heard from some other growers having success growing N. burbidgeae in areas of Florida as a lowlander but I don't know if that is entirely true.
For sure, higher temps lead to increased growth, faster metabolism etc. But analogous to VFTs skipping dormancy, how long can a N. burbidgeae hold out in intermediate conditions. If what you say is true with regards to the median of the population lying with N. rajah in the highland range, that might provide the answer that: N. burbidgeae is tolerant for prolonged periods at intermediate "conditions", but requires highland "conditions" to persist long-term.