Doryopteris decipiens

Taisha is again the writer:

Today, we have images of Doryopteris decipiens, or the triangleleaf lipfern. These photographs (original 1 | original 2 | original 3) were shared by David Eickhoff (D.Eickhoff@Flickr). Thanks, David!

Doryopteris decipiens is an endemic Hawaiian fern in the Pteridaceae (subfamily Cheilanthoideae). The species is one of five or six in the genus (depending on taxonomic perspective) that are present in Hawaii. When the genus first reached the Hawaiian Islands is still to be determined, but it seems that the ancestors of at least two species, Doryopteris decipiens and Dorypoteris decora, colonized at different times (as opposed to a single colonization event and subsequent evolution from the original colonizer).

It can be difficult to delimit and identify Hawaiian Doryopteris taxa due to their extreme variation, presence of hybrids and polyploid species, and intermediate / overlapping morphological characters. Dorypoteris decipiens can be described to have a small erect form with a pedately-dissected lamina that is glabrescent on the abaxial surface. This species also has a thinner petiole (c. 1mm diameter) and indusia with crenulate margins (for more on distinguishing features, see: Yesilyurt, J.C. (2005). The fern genus Doryopteris (Cheilanthoideaes-Pteridaceae) in the Hawaiian Islands. Kew Bulletin. 60:547-55).

Doryopteris decipiens
Doryopteris decipiens
Doryopteris decipiens

7 responses to “Doryopteris decipiens”

  1. Ilze Choi

    This is spectacular. would be perfect for ornamental part of garden. What is the brown lining along the edges? Seeds?

  2. Niña Klinck

    This is a stunner. As a quilt artist, I see all kinds of possibilities here!

  3. Ginny

    That first photo really is stunning, and I can see why it would make us gardeners hold our breaths for a second – but the spore cases (the brown lining) would be on the underneath side of the fronds, and not very visible. Gorgeous photo, though – thanks to Taisha and David!

  4. karen mulhern

    Seeing this fern is a definite first for me. Wow! The spores outlining the underside almost makes the leaf look like a felted silk plant you’d buy at a craft store! Beautiful!

  5. Helen McCall

    What a handsome fern. Love the shape and the sori along the margins – Wow! Unfortunately it probably wouldn’t be happy in my Shoreline, WA garden.

  6. Carl Wishner

    Dear Ilze Choi,
    I’m not personally familiar with this fern. However, I do understand the morphology and life cycle of ferns in general. Ferns are vascular plants, but they do not produce seeds. Instead, they produce spores, by meiosis, in structure called sporangia. In this case, the sporangia are at the margins of the fronds. Often, the sporangia are protected by a flap of tissue, called and indusium. The indusium here is merely the recurved margin of the frond. All the reddish stuff you asked about are the sporangia (and spores). Spores are shed into the wind, and germinate into tiny and short-lived plants with only one set of chromosomes (haploid), called gametophtyes. These bear the sex organs, male and female. Sperm swim through a water film to the egg, fuse with it, and produce a zygote, which then has two sets of chromosomes (diploid). The zygote develops by mitotic cell division into an embryo. The embryo ultimately develops into the typical fern, which we call the sporophyte, which bears the spores again to complete the alternating cycle.
    Carl

  7. David Eickhoff

    Aloha Kakou,
    Appreciate all the nice comments. The Hawaiian Doryopteris spp. grow in some of the harshest conditions of all our native ferns, from hot dry open shrub & grasslands to mesic forests.
    The Hawaiian Islands are home to 159 native ferns & lycophytes, from huge tree ferns or hapu’u (Cibotium spp.) to tiny filmy ferns (Gonocormus minutus). (Vernon & Ranker, 2013)
    Hopefully more species will be posted on UBCBG in the future.
    Mahalo nui loa,
    David

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