Lythraceae

Loosestrife family, herbs, shrubs to trees with flaky bark. Leaf entire and often opposite, lacks punctate gland dots. Flower has prominent hypanthium, calyx lobes valvate from hypanthial apex, petals crumpled in bud, stamens often numerous and of different length. Fruit usually capsule.

Cuphea llavea — Mobot September, 2019
Lagerstroemia indica (crape myrtle) — Mobot August 2018

Liliaceae

Perennial herbs; geophytes (tubes or rhizomes); flowers large, tepals 3 + 3, often spotted; anthers distinct and free, 3 + 3; style is solitary, 3 stigmas, 3 carpels (syncarpous), 3 locules; ovary superior; fruit capsule or berry.

false garlic-taken at Shaw Nature Reserve (4/27/19)
wild hyacinth-taken at Shaw Nature Reserve (4/27/19)

Aristolochiaceae

Dutchman’s pipe family, often climbing plants, has enlarged petaloid calyx (3 sepals fused together), corolla reduced or absent, stamen fused and forms gynostemium (stamen and gynoecium fused together). Gynoecium is syncarpous, with 3-6 carpels, ovary often inferior, fruit usually capsule with many seeds.

Aristolochhia arborea (Birthwort), taken at MOBOT, 8/11/2018
wild ginger, taken at Shaw Nature Reserve, 4/27/2019

Apocynaceae

Milkweed family, with latex, 5-merous perianth/androecium, gynoecium usually with 2 carpels. Pollens fused to form pollinia.

Amsonia hubrichtii, commonly called bluestar, taken at Shaw Nature Reserve
Catharanthus scitulus, taken at Climatron, MOBOT
Nerium oleander

Rubiaceae

coffee family. Leaf simple, entire, usually opposite or decussate, connate stipules (to protect leaves), colleters (secretary hairs) adaxial to stipules, flowers often small and cluster, calyx and corolla 4 or 5 united, ovary inferior.

Adina rubella-taken at Danforth Center, St. Louis
Cubanola domingensis – taken at Climatron, MOBOT
galium – taken at Shaw Nature Reserve, MO
Mussaenda phillipica – taken at MOBOT
Pentas lanceolata – taken in St. Louis, MO

Acanthaceae

leaf opposite, simple, zygomorphic flowers, usually bilabiate flower (like mint flowers), stamens often 2 or 4 (rarely 5), capsule explosively dehiscent.

Crossandra (firecracker flower)-taken at Montreal Botanical Garden, 7/18/2018
Pachystachys Lutea (golden shrimp plant)-taken at Montreal Botanical Garden, 7/18/2018
Ruellia simplex-taken at Mobot, 8/11/2018
wild petunia

Ranunculaceae

Stamen numerous, spirally arranged perianth parts, apocarpous gynoecium.

buttercup-taken at Shaw Nature Reserve, 4/27/19
Rue anemone-taken at Shaw Nature Reserve, 4/27/19
clematis fremontii-taken at Shaw Nature Reserve, 4/27/19
Hydrastis canadensis-goldenseal-taken at Shaw Nature Reserve, 4/27/19
prairie larkspur-taken at Shaw Nature Reserve, 4/27/19
Anemone virginiana-thimbleweed-taken at Shaw Nature Reserve, 6/21/19