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Old 07-31-2010, 07:30 PM
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Default Cotyledon ID help? green-bean leaves, orangish-red bell-form flowers

Hi! Could you help me identify this Cotyledon sp.? Is it just another form of C. orbiculata?

I bought it from a big-box store a couple years ago, probably distributed by Altman's. I believe it was identified merely as Succulent sp. When I first picked it up (being even less experienced back then), I mistook it for a Senecio sp. I have grown and divided the original 3" plant into three sizable 8" plants. (In the picture, they look a little leggy and haggard after blooming. I plan to take cuttings and propagate them on).

Thin, finger-shaped leaves are light green and resemble home-grown string beans, but circular in cross-section. They are matte and mildly glaucous -- not as waxy-powdery as some C. orbiculata (pig's ear, esp. var. "powdered sugar"), but not nude-glossy green like typical var macrantha.

Stems show typical Cotyledon bumps from old leaves (these plants also seem to show a rust-colored reaction to some pest... help?). New leaves start as tiny, dark-pink tongues -- also typical of Cotyledon (cf C. orbiculata).

Flowers look the same as Cotyledon orbiculata (to my hobby-grower eyes): orangish-red bells from a tall stalk (2' stalk on an 8" plant). I grow at least 5 forms of Cotyledon orbiculata, and this plant flowered around the same time.

The pleasure of the plant is the slightly irregular surface of the green "fingers" -- not smooth like Senecio madraliscae "blue chalk fingers". These chunky leaves pile up into improvised formations, on some days resembling a Balinese statue with dozens of arms.

Not to mention the ease of culture and propagation. And the apparent "convergent evolution" of morphotype with Dudleya hassei, Senecio madraliscae, and countless Mesembryanthemaceae -- just to name a few.

Also the flowers attract hummingbirds.

--DCE
sentientmeat.net

Attached photo is compressed for XericWorld.com. For full resolution at Flickr, click here.
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