Spikelets with few-many glumes have spiral or distichous
0.8 cm wide, their stipes very short, brown-cream during anthesis (brown in dried specimens), lanceolate, subdense, with 12 to 14 lowers, distichous
, complanate; rachis geniculate, quadrangular and exposed, totally covered by a ferrugineous indument; floral bracts ca.
Taxa with a combination of hollow upright barbed epidermal spicules, curved hollow skeletal and upright spicules, and a distichous
radula with denticulate hooks include Pruvotina, Pararrhopalia Simroth, 1893, Eleutheromenia Salvini-Plawen, 1967, Labidoherpia Salvini-Plawen, 1978, and Gephyroherpia Salvini-Plawen, 1978; they were divided into two subfamilies on the basis of salivary gland morphology (Salvini-Plawen, 1978).
Experiments are continuing especially in ascertaining some sort of ratio of seedlings that turn out to be either spirostichous or distichous
, anthesis nocturnal, with an odor, strongly downwardly secund at anthesis, densely to subdensely arranged, 65-70 mm long (not including the stamens), pedicels stout, 6-11 mm long, ca.
series Binderiana Distichous
axis, (Grunow) Tseng compressed to et Lu flattened.
This new species can be distinguished from all known taxa due to an unusual combination of morphological features, like the distichous
arranged leaves, leaf blades distinctly nerved on both sides with margins sparsely spinose, inflorescence curved and short, flowers strongly fragrant, sepals acuminate and dark purplish-wine, petals yellow with an obtuse and apiculate to subacute apex, forming a tubular corolla, and by the anthers basaly connate and equaling the petals.
During the vegetative stage, the terminal meristem produces leaves in a distichous
phyllotaxis; once the floral induction has taken place, the inflorescence primary branches generally have a spiral arrangement (Bonnett, 1948; Weir & Dale, 1960; Moncur, 1981; Sundberg & Orr, 1996; Doust & Kellogg, 2002; Kellogg et al., 2004; Bess et al., 2005; Ikeda et al., 2005; Itoh et al., 2005; Reinheimer et al., 2005).