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Please help identify mystery vine.
I've helped ID a few mystery plants posted to this group, but now I
need everyone's help myself. I've been handed a real stumper. Collected in Hidalgo Co, Texas. High-climbing vine without tendrils. Leaves alternate (they look opposite in the images, but it's just how the specimen was pressed), glabrous, with slender petioles to ca. 2 cm long on flowering branches, blades ovate to slightly reniform, entire, apically rounded, to ca. 3 cm long. Flowers in axillary panicles. Pedicels minutely bracteate; perianth apparently in one whorl, 4-parted, the parts oblanceolate, whitish, ca. 1 cm long. Stamens apparently several to many, the filaments very slender and as long as or longer than the perianth parts, anthers long, versatile. Ovary superior, looks like 3 to 5 recurved style branches; looks syncarpous but the specimen is dry and difficult to examine. I have no fruit to look at. My first thought was "autumn clematis," but the leaves are simple and it's not glaringly apocarpous. It's not Cocculus, and it's not bittersweet (I don't think). Does anyone have any ideas? This far south, there's always the chance it's something exotic that has run amok, but you'd think I could suss it out *somehow*! plant, half size http://botany.cs.tamu.edu/FLORA/pic1...ysteryhalf.JPG plant, full size http://botany.cs.tamu.edu/FLORA/pic1...ysteryfull.JPG flowers, x 2 http://botany.cs.tamu.edu/FLORA/pic1...omysteryx2.JPG flowers, x 4 http://botany.cs.tamu.edu/FLORA/pic1...omysteryx4.JPG Monique Reed Bio Dept. TAMU |
How about Agdestis clematidea Moc. & Sessé ex DC.?
"Monique Reed" wrote in message ... I've helped ID a few mystery plants posted to this group, but now I need everyone's help myself. I've been handed a real stumper. Collected in Hidalgo Co, Texas. High-climbing vine without tendrils. Leaves alternate (they look opposite in the images, but it's just how the specimen was pressed), glabrous, with slender petioles to ca. 2 cm long on flowering branches, blades ovate to slightly reniform, entire, apically rounded, to ca. 3 cm long. Flowers in axillary panicles. Pedicels minutely bracteate; perianth apparently in one whorl, 4-parted, the parts oblanceolate, whitish, ca. 1 cm long. Stamens apparently several to many, the filaments very slender and as long as or longer than the perianth parts, anthers long, versatile. Ovary superior, looks like 3 to 5 recurved style branches; looks syncarpous but the specimen is dry and difficult to examine. I have no fruit to look at. My first thought was "autumn clematis," but the leaves are simple and it's not glaringly apocarpous. It's not Cocculus, and it's not bittersweet (I don't think). Does anyone have any ideas? This far south, there's always the chance it's something exotic that has run amok, but you'd think I could suss it out *somehow*! plant, half size http://botany.cs.tamu.edu/FLORA/pic1...ysteryhalf.JPG plant, full size http://botany.cs.tamu.edu/FLORA/pic1...ysteryfull.JPG flowers, x 2 http://botany.cs.tamu.edu/FLORA/pic1...omysteryx2.JPG flowers, x 4 http://botany.cs.tamu.edu/FLORA/pic1...omysteryx4.JPG Monique Reed Bio Dept. TAMU |
Here is an illustration of Agdestis clematidea (on the left).
http://www.efloras.org/object_page.a...097&flora_id=1 Does the plant have a distinctive foul odor? http://www.efloras.org/florataxon.as...n_id=220000316 ******************* In return, you will be obligated to answer a few questions I have on some Sedum types in your herbarium. "Cereus-validus..." wrote in message . com... How about Agdestis clematidea Moc. & Sessé ex DC.? "Monique Reed" wrote in message ... I've helped ID a few mystery plants posted to this group, but now I need everyone's help myself. I've been handed a real stumper. Collected in Hidalgo Co, Texas. High-climbing vine without tendrils. Leaves alternate (they look opposite in the images, but it's just how the specimen was pressed), glabrous, with slender petioles to ca. 2 cm long on flowering branches, blades ovate to slightly reniform, entire, apically rounded, to ca. 3 cm long. Flowers in axillary panicles. Pedicels minutely bracteate; perianth apparently in one whorl, 4-parted, the parts oblanceolate, whitish, ca. 1 cm long. Stamens apparently several to many, the filaments very slender and as long as or longer than the perianth parts, anthers long, versatile. Ovary superior, looks like 3 to 5 recurved style branches; looks syncarpous but the specimen is dry and difficult to examine. I have no fruit to look at. My first thought was "autumn clematis," but the leaves are simple and it's not glaringly apocarpous. It's not Cocculus, and it's not bittersweet (I don't think). Does anyone have any ideas? This far south, there's always the chance it's something exotic that has run amok, but you'd think I could suss it out *somehow*! plant, half size http://botany.cs.tamu.edu/FLORA/pic1...ysteryhalf.JPG plant, full size http://botany.cs.tamu.edu/FLORA/pic1...ysteryfull.JPG flowers, x 2 http://botany.cs.tamu.edu/FLORA/pic1...omysteryx2.JPG flowers, x 4 http://botany.cs.tamu.edu/FLORA/pic1...omysteryx4.JPG Monique Reed Bio Dept. TAMU |
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