Living in the same area for many years means that I see some
of the same plants over and over. It’s kind of nice, like seeing old friends.
Sometimes, plants that you’ve still seen many times still have the power to
impress you more than usual. Bluets (Houstonia
spp.) have been that way for me lately.
Of the 8 species of Houstonia found in Georgia, there are
spring-blooming ones and summer-blooming ones. Right now, the spring ones are
winking up at us from very low on the ground. You probably won’t be surprised
to know that these small plants in the madder family (Rubiaceae) have some
small native relatives like buttonweed (Diodia),
bedstraw (Galium) and partridgeberry
(Mitchella). You’d be more surprised to
know that buttonbush (Cephalanthus) and Pinckneya
are also in that family!
Houstonia pusilla |
The second species is a perennial one: Houstonia caerulea also has a small rosette of tiny leaves. It
usually grows a bit taller than the annual species but still not more than 6
inches. Common names include azure bluet and Quaker Ladies. I usually find this
one in moist, mossy areas such as a damp ravine. I’m still trying to get this
one going in my yard as well. I think it was eaten last year by a more
aggressive neighbor. Notice that this species has a yellow center; it shares
this characteristic with thymeleaf bluet, Houstonia
serpyllifolia, which grows in the mountains, as well as with the Southern annual
bluet, Houstonia micrantha.
Houstonia caerulea |
A uniquely Coastal Plain species is the round-leaved bluet, Houstonia procumbens. Tiny flowers
sprout from creeping foliage in the spring, and the bright whiteness of the
flowers evokes another one of its common names: innocence. I saw it on the side
of a road in the Okefenokee Swamp during a trip with the Georgia Botanical
Society.
The remaining 3 species are summer bloomers. Houstonia
canadensis is found in North Georgia and recognized by the presence of
basal leaves at flowering time compared to the others in summer. Houstonia longifolia and Houstonia purpurea are similar and more
widespread, except for the shape of the leaves. I believe what I found once
(and I’m not even sure where) is the long-leaved bluet.
Now that you know these little guys, keep an eye out for
them. They are sweet little members of our native plant communities.
These are some of my most beloved species with some of the best common names. Quaker ladies! Innocence! Thank you for highlighting them.
ReplyDeleteNow I know what to call the pretty flowers that pop up in the field on our new property! Thanks
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