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614 The monotypic grass genus Anomochloa Brongn. (sole spe ...

614 The monotypic grass genus Anomochloa Brongn. (sole spe ...

April 2012] SAJO ET AL.

April 2012] SAJO ET AL. — FLOWER AND INFLORESCENCE OF ANOMOCHLOA (POACEAE) 619 Fig. 4. Anomochloa marantoidea. (A) Longitudinal section of developing partial inflorescence, showing three branches and three florets. (B) Transverse section of inner bract of floret, showing tissue differentiation. (C) Longitudinal section of youngest floret. (D) Transverse section of part of floret, showing hooked margins of inner bract. (E, F) Details of sections of the same partial inflorescence as Fig. 2 . Labels: B = bicarinate bract, b = bracteole, fl = fringed lodicules, ib = inner bract of floret, ob = outer bract of floret, ov = ovary, P1 = first branch, P2 = second branch, P3 = third branch.

620 AMERICAN JOURNAL OF BOTANY [Vol. 99 Fig. 5. Anomochloa marantoidea , dissected young spikelets (SEM), showing early stages of flower ontogeny. (A, B) Spikelet primordium from above (A) and lateral view (B), showing two bracts surrounding undifferentiated flower primordium. (C) Two spikelet primordia, the right-hand one with undifferentiated flower primordium, the (older) left-hand one with four early stamen primordia surrounding carpel primordium and ovule primordium in center. (D) Flower primordium at very young stage, with four stamen primordia and central carpel primodium; ovule not yet initiated. (E– I) Developing flower primordia with four stamens, except atypical flower primordium in (F) with only three stamens; one stamen removed in (I). (J) Older stage showing anther development, style curving upward. Material: (A, C – G), NYBG, (B, H – J) FF. Labels: a = anther, bl = bracteole, b or br = bract, c = carpel primordium, f = flower primordium, o = ovule primordium, s = stamen primordium, st = style. Bars = 100 µ m, except (D, F, G) = 10 µ m.

Lariniophora, a new monotypic orb-weaving spider genus from ...