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Stuckenia pectinata (Sago false pondweed)
...mm–22.0 mm. Stamen number: 4. Pistil number: 4. Carpels fused: ...
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Moraceae: Dichotomous Key
... 2a. Leaf blades entire and unlobed, pinnately veined; branches often with axillary spines; fruit yellow-green, spherical, 6–12 cm wide 2b. Leaf blades toothed, usually at least s...
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Campanulaceae: Dichotomous Key
... 2a. Flowers and fruits solitary, sessile or subsessile in the axils of leaves [Fig. 541]; capsules slender-cylindric; plants annual 2b. Flowers and fruits solitary or borne in a ...
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Polemoniaceae: Dichotomous Key
...stigmas 2 1b. Bracts and calyx lobes not spine-tipped (though sometimes awn-tipped); stigmas usually 3 2a. Leaf blades simple and entire; stamens attached at different height...
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Euphorbiaceae: Dichotomous Key
...626, 627, 628] 2b. Plants without latex, the sap watery; inflorescence an axillary cyme; flowers with a calyx, clearly unisexual [Figs. 624, 625] 3a. Plants with stellate hai...
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Urticaceae: Dichotomous Key
... 2a. Plants with conspicuous, stinging hairs; leaf blades serrate; carpellate sepals distinct or nearly so, only 2 of the 4 sepals persistent in fruit, not enclosing the achene in fruit; stami...
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Huperzia: Dichotomous Key
... 2a. Trophophylls obovate, definitely widest beyond the middle, with 1–8 evident teeth [Fig. 2], lacking stomates on the adaxial surface; shoots with evident winter bud constrictions ...
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Lycopodiella: Dichotomous Key
... 2b. Horizontal shoots prostrate, rooting 1.5–4.8 cm distal to the most proximal upright shoot [Fig. 14]; sporophylls 2.9–5 (–5.2) mm long, appressed, entire or rarely with a low tooth on one ...
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Woodsia: Dichotomous Key
...blades 2.5–22 (–25) cm long 2a. Plants glabrous, with sessile glands; basal leaflets flabellate; leaf blades 1–1.5 cm wide; petioles green to light brown 2b. Plants with hair...
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Nymphaea: Dichotomous Key
...with 20–40 stamens; stigmatic disk with 5–12 lines; leaf blades elliptic, (2–) 4–9 (–15) cm wide, with a wide sinus, mottled when young 1b. Flowers 6–19 cm wide, with 40–100 stamens; stig...