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Purchase includes free access to book updates online and a free trial membership in the publisher's book club where you can select from more than a million books without charge. Chapters: Ophioglossum, Ophioderma Palmata, Ophioglossum Vulgatum, Ophioglossum Azoricum, Ophioderma Falcatum, Ophioglossum Californicum, Ophioglossum Pusillum, Mankyua, Ophioderma Pendulum. Excerpt: Some 25-30, including:Ophioglossum austroasiaticumOphioglossum azoricumOphioglossum californicumOphioglossum costatumOphioglossum crotalophoroidesOphioglossum engelmaniiOphioglossum lusitanicumOphioglossum nudicauleOphioglossum pedunculosumOphioglossum petiolatumOphioglossum polyphyllumOphioglossum pusillumOphioglossum pycnosticumOphioglossum reticulatumOphioglossum tenerumOphioglossum thermaleOphioglossum vulgatum Ophioglossum (adder's-tongue) is a genus of about 25-30 species of Ophioglossales in the family Ophioglossaceae, with a cosmopolitan but primarily tropical and subtropical distribution. The name Ophioglossum comes from the Greek, and means "snake-tongue". Adders-tongues are so-called because the spore-bearing stalk is thought to resemble a snake's tongue. Each plant typically sends up a small, undivided leaf blade with netted venation, and the spore stalk forks from the leaf stalk, terminating in sporangia which are partially concealed within a structure with slitted sides. The plant grows from a central, budding, fleshy structure with fleshy, radiating roots. When the leaf blade is present, there is not always a spore stalk present, and the plants do not always send up a leaf, sometimes going for a year to a period of years living only under the soil, nourished by association with soil fungi. Ophioglossum has the highest chromosome count of any known living organism, with up to 1,260 chromosomes. However, most species only have chromosomes in the 240-300+ range. ... More: http://booksllc.net/?id=67210
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Purchase includes free access to book updates online and a free trial membership in the publisher's book club where you can select from more than a million books without charge. Chapters: Ophioglossum, Ophioderma Palmata, Ophioglossum Vulgatum, Ophioglossum Azoricum, Ophioderma Falcatum, Ophioglossum Californicum, Ophioglossum Pusillum, Mankyua, Ophioderma Pendulum. Excerpt: Some 25-30, including:Ophioglossum austroasiaticumOphioglossum azoricumOphioglossum californicumOphioglossum costatumOphioglossum ...