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Dendrobium sulphureum

Discussion in 'Orchid Species' started by Chuck-NH, Jan 20, 2019.

  1. Chuck-NH

    Chuck-NH Well-Known Member

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    I should start out this thread with...” a vexing vexillarius problem” followed by, “Don’t blindly trust what’s on the tag”. :eek:

    The first photo is of a plant labeled D. vexillarius var. albiviride. This is a very small, tufted plant with red tinted foliage. The key for D. vexillarius indicates var albiviride should be the largest variety of the species. The second photo shows a comparison with a typical D. vexillarius var microblepharum...size is significantly smaller with shape differences as well.

    26439A66-9AC6-4BA5-8E0A-2B6EB66C4ED7.jpeg

    A796BE93-67E3-45FE-8FDC-08C32A24FB2F.jpeg



    I believe this to be D. sulphureum, but perhaps a different variety than my other two plants of that species (photos below). Blooms are very similar in shape and size although the two below retain a white color while the plant pictured in the first photo above will age to more of a yellow. The foliage also stays tufted and red (no matter the light conditions) on the first plant, while the other two clones are always green with a larger stature caused by an an ascending growth pattern. Some day, I will try to key out the D. sulphureum clones, but not as easy as vexillarius.

    8E510D92-1513-47D0-B14B-ABD6A34B6785.jpeg

    66E1EBDA-A87D-4642-983A-2ECF7FA4DF4E.jpeg
    D56A01F8-FBDC-4DD2-ACCA-9E7654BB33B6.jpeg
     
  2. sam1147

    sam1147 sam1147

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    :clap:
     
  3. Mikhail kujawa

    Mikhail kujawa Well-Known Member

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    Stunning and my favorite type of orchids! Love your collection Chuck!
     
  4. naoki

    naoki Well-Known Member

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    The pink leaves look pretty. My D. sulphureum has a touch of red (and reddish pseudobulbs), but not as pretty as yours (link).
     
  5. Raven

    Raven Active Member

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    Very nice!
    Surprisingly Ecuagenera lists it as a warm grower..
     
  6. Chuck-NH

    Chuck-NH Well-Known Member

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    Thanks all! Yes Raven, I see that temperature listings for orchids in general often vary based on the vendor. If it’s a plant I’m unfamiliar with, I often try to check more than one source for information. Many times I find the information on the forum based on members personal experiences.
     
  7. Raven

    Raven Active Member

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    Yeah, I know, that's what I usually do as well. My question is more like, if that vendor has more warmth-tolerant clones or not. I killed a bunch of seedlings of D. sulphureum when I moved to the Midwest last summer.
     
  8. Roberta

    Roberta New Member

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    They also list Cattleya (Laelia) purpurata as a "warm grower" ... I say to Ivan "Don't tell MY plants!" which are very happy in my southern California back yard, fortunately they can't read.