Apocynaceae

(uh-poss-sin-AY-see-ee)
– a family in the Gentianales order –

Here in the St. Louis Area, we have 18 not-too-obscure plants that are in the “Dogbane” family. They can be organized into 3 subfamilies:

2 are in the Apocynoideae (Dogbane) subfamily:

  • Apocynum androsaemifolium  (Spreading Dogbane) [CC5]
  • Apocynum cannabinum  (Indian Hemp) [CC3]

14 are in the Asclepiadoideae  (Milkweed) subfamily:

  • Asclepias amplexicaulis  (Clasping Milkweed) [CC7]
  • Asclepias hirtella  (Tall Green Milkweed) [CC4]
  • Asclepias incarnata  (Swamp Milkweed) [CC4]
  • Asclepias purpurascens  (Purple Milkweed) [CC6]
  • Asclepias quadrifolia  (Fourleaf Milkweed) [CC6]
  • Asclepias stenophylla  (Narrowleaf Milkweed) [CC9]
  • Asclepias sullivantii  (Prairie Milkweed) [CC8]
  • Asclepias syriaca  (Common Milkweed) [CC0]
  • Asclepias tuberosa  (Butterfly Weed) [CC5]
  • Asclepias verticillata  (Whorled Milkweed) [CC2]
  • Asclepias viridiflora  (Green Comet Milkweed) [CC7]
  • Asclepias viridis  (Green Antelopehorn Milkweed) [CC5]
  • Cynanchum laeve  (Honeyvine Milkweed) [CC0]
  • Matelea decipiens  (Climbing Milkweed) [CC5]

2 are in the Rauvolfioideae  (Devil Peppers) subfamily:

  • Amsonia tabernaemontana  (Bluestar) [CC6]
  • Vinca minor  (Periwinkle) [intro]

[CC] = Coefficient of Conservatism