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Key to Phyllanthus
https://fsus.ncbg.unc.edu/main.php?pg=show-key.php&keyid=40093
2 Plants woody, shrubs or trees, 10-100 dm tall. | |
3 Ultimate branchlets flattened into cladodes; leaves on ultimate branchlets scale-like, caducous; fruits capsules; shrub to 3 m tall; [subgenus Xylophylla; section Xylophylla] | |
4 Plant with “normal” arrangement of branches and leaves (leaves uniformly distributed on the stem and branches, alternate and either distichous or spirally arranged, the ultimate branches not deciduous, flowers produced on ultimate and penultimate orders of branches). | |
5 Leaves arranged spirally; staminate sepals 0.7-2.5 mm long; stipules not auriculate; [section Paraphyllanthus]. | |
5 Leaves arranged distichously; staminate sepals 0.5-0.7 mm long; stipules typically auriculate; [subgenus Phyllanthus; section Loxopodium]. | |
6 Stems terete; filaments free; seeds 0.7-1.1 mm long; [widespread in our region]. | |
7 Pistillate sepals 0.2-0.3 mm wide; leaf venation clearly visible on the lower surface; stems glabrous; cymules with 1 staminate and (1-) 2-3 (-5) pistillate flowers; pistillate nectary cupular, unlobed, enclosing the ovary 1/3-1/2 of its length; [widespread in our region] | |
7 Pistillate sepals (0.2-) 0.3-0.5 (-0.7) mm wide; leaf venation obscure on the lower surface; stems scabridulous; cymules with 1-2 staminate and 1-2 pistillate flowers; pistillate nectary annular, unlobed or 6-lobed, enclosing the ovary only basally; [s. FL] | |
4 Plant with “phyllanthoid” arrangement of branches, leaves, and flowers (leaves lacking on the main stem, the penultimate order of branches with scales arranged spirally, the ultimate order of branches deciduous, bearing normal leaves alternately and distichously, flowers produced only on the ultimate, deciduous branches), the ultimate branches and their distichous small leaves resembling the rachis and leaflets of a once-pinnate compound leaf. | |
9 Fruiting pedicels 0.5 mm long; seeds with 12-15 transverse ridges and sometimes 1-3 pits; male flowers borne toward the tip of the branchlets, female flowers toward the base; [section Urinaria] | |
10 Pistillate sepals (0.5-) 0.7-1.5 mm long, 1-veined or obscurely veined; staminate sepals 0.3-1 mm long; seeds longitudinally ribbed, 0.8-1.5 mm long; capsules 1.7-2.7 mm in diameter; pistillate nectary of 3 glands or annular and 5-9-lobed | |
10 Pistillate sepals 3-3.5 mm long, pinnately veined; staminate sepals 1.5-3 mm long; seeds verrucose, 1.5-1.8 mm long; capsules 3.5 mm in diameter; pistillate nectary annular, unlobed; [subgenus Phyllanthus; section Phyllanthus] |
Key C1: floating aquatics
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https://fsus.ncbg.unc.edu/main.php?pg=show-key.php&keyid=40704
1 Individual leaves or “fronds” < 2 cm wide, or leaves absent. | |
5 Plants unbranched, or if branched, irregularly so; upper surface of leaves glabrous, waxy. | |
6 Plant with well-differentiated stems and leaves, the leaves obviously and alternately spaced along a well-developed stem; flowers axillary |