Colors

Data mode

Account

Login
Sign up

Collapse this

Support the Flora of the Southeastern US

2024 has been a banner year for making the best flora we can imagine. We've created:
With financial support from people like you, we are aiming even higher in 2025. Together we can accomplish all this: Vote on our 2025 priorities
  • Add Global Conservation Ranks (GRanks) vote
  • Professional graphic keys (polyclaves) to individual families/genera vote
  • 2 new FloraQuest apps: Florida & Mid-South vote
  • Image overlays highlighting diagnostic characters with arrows vote
  • iNaturalist integration in FloraQuest vote
Write-in vote: vote
We've set a goal of recruiting 200 ongoing supporters to donate $15 or more each month in 2025. Please help us reach this goal and make next year's flora even better:

Click the number at the start of a key lead to highlight both that lead and its corresponding lead. Click again to show only the two highlighted leads. Click a third time to return to the full key with the selected leads still highlighted.

Key to Hypericum, Key F: shrubby and subshrubby St. John's-worts

Copy permalink to share | Check for keys that lead to this key

1 Plant a matted, decumbent shrub, 0.5-3 (rarely to 5) dm tall; leaves 1.5-2.5× as long as wide, without axillary fascicles of leaves; inflorescences of 1 (-5) flowers; [endemic to rock outcrops at moderate to high elevations in the Mountains of sw. NC, nw. SC, and ne. GA]; [section Myriandra, subsection Pseudobrathydium]
1 Plant an erect shrub or suffrutescent herb, 1.5-20 dm tall; leaves 1.5-5× as long as wide, with or without axillary fascicles of leaves; inflorescences of (1-) 3-70 flowers; [collectively widespread in our region, but not at moderate to high elevations in the s. Blue Ridge].
  2 Leaves 5-15× as long as wide; stamens 120-200 or 45-85; plants 1.5-6 dm tall.
    3 Stamens 120-200; leaves 20-35 mm long × 3-5 mm wide; seeds 1.5-1.8 mm long; [section Myriandra, subsection Brathydium]
    3 Stamens 45-85; leaves 30-70 mm long × 3-15 mm wide; seeds 2.0-2.7 mm long; [section Myriandra, subsection Suturospermum]
  2 Leaves 2-5× as long as wide; stamens 30-95; plants 4-20 dm tall; [section Myriandra, subsection Suturosperma].
      4 Larger leaves 4-10 mm wide, 3-5× as long as wide; axillary leaf fascicles present in main leaf axils; seeds pale brown, faintly reticulate, 0.4-0.5 mm long
      4 Larger leaves 10-30 mm wide, 1.5-3× as long as wide; axillary leaf fascicles absent; seeds dark brown, strongly reticulate, 1.5-2 mm long.
        5 Flowers in simple 3-flowered cymes or in compound cymes with up to 8 flowers; sepals 3 mm long, oblong, obtuse apically; capsules ovoid, 8-10 mm long (excluding the styles) and 5-7 mm broad; seeds 1.8-2.0 mm long, cylindric, sometimes slightly falcate, dull brown when mature
        5 Flowers usually in many-flowered cymes terminating branches; sepals 1.5-2.0 mm long, usually triangular-acute; capsules ovoid to subglobose, 4-5 mm long (excluding the styles) and 4-5 mm broad; seeds 1.5-1.8 mm long, usually falcate-cylindric, dark purplish-brown and lustrous when mature