Compressed (part 2)

Here are some of the showier spring ephemerals to watch for in the Potomac Gorge this week.

In the floodplain close to the river, Virginia bluebells (Mertensia virginica; left) are approaching peak bloom. Mixed in with them in a few places are Dutchman’s breeches (Dicentra cucullaria; below right), which you might also find on moist, rocky outcroppings.

Trout lilies (Erythronium americanum; above left) like moist soils, too. Generally I see them in the transition areas between floodplain and slopes.

Further upslope are cut-leaf toothworts (Cardamine concatenata; left).

 

On drier slopes watch for scattered patches of bloodroot (Sanguinaria canadensis; below).

 

 

Look for twinleaf (Jeffersonia diphylla; below) in moist, rocky areas. They like limestone soils, so aren’t as widespread as these other species, but where they do grow they they tend to grow en masse.

Spring beauties (Claytonia virginica; below) are just about everywhere.

 

 

 

 

More tomorrow.

Waking Up

Monday, March 5 – took a quick walk on the Cabin John Trail. Most of the green forbs were aliens, though the new foliage of a few ephemerals was coming up.

There was one small clump of round-lobe hepatica (Anemone americana; Ranunculaceae) with a few buds opening. It’s early, but not too early, for this species to be flowering.

And a few clumps of Virginia bluebells (Mertensia virginica; Boraginaceae), one of which was starting to bloom. This is quite early, but with the ephemerals I often see one or two blooming on either end of the bell curve. Peak bloom for bluebells is probably at least three weeks away.

 

More Teasers

Odd weather we’ve had this winter. Unusually cold on average, but with unusually warm days. Plants are emerging and budding up and some are blooming already, as I reported in the last post. Anyway, here’s more of what we can look forward to in the next month or so.

Jeffersonia diphylla (twinleaf; Berberidaceae)

I usually see these plants in large stands, and all the plants in a stand seem to flower at the same time, but the flowers only last a few days. I’m going to start watching for them in mid-March this year.

Packera aurea (golden ragwort; Asteraceae)

This is the same species I posted a picture of on Wednesday, with the purple buds. Such a perky thing. The first species in the Asteraceae to bloom ’round here.

 

Sanguinaria canadensis (bloodroot; Papaveraceae)

Since bloodroot grows from rhizomes, when there’s more than one plant they’re often in a line.

 

 

Erythronium americanum (trout lily; Liliaceae)

 

 

 

Erythronium albidum (white trout lily; Liliaceae)

 

 

 

 

Trillium sessile (toadshade; Liliaceae)

Honestly my love for this plant comes from that common name. This is peak bloom; the flower petals don’t spread open. Yellow flowering forms can be found near Carderock.

 

Stellaria pubera (star chickweed; Caryophyllaceae)

It’s all about those stamens. And fun fact: each flower has five petals. The petals are so deeply cleft that a single petal appears to be two petals.

 

Thalictrum thalictroides (rue anemone; Ranunculaceae)

In botanical Latin the suffix                “-oides” means “resembling”. So this species is “Thalictrum that looks like Thalictrum”. Thalictrum is “from thaliktron, a name used to describe a plant with divided leaves”.*

Mertensia virginica (Virginia bluebells; Boraginaceae)

These will be carpeting floodplains and other very moist-soil areas in less than a month.

 

 

Phlox divaricata (wild blue phlox; Polemoniaceae)

Wild blue phlox starts blooming at about the same time as Virginia bluebells, but they last longer. It’s a glorious sight when these two and golden ragwort fill the woods.

 

*California Plant Names: Latin and Greek Meanings and Derivations
A Dictionary of Botanical and Biographical Etymology
Compiled by Michael L. Charters

On the Last Day of Winter

Today is the first day of meteorological spring* (astronomical spring is still three weeks away), but as of yesterday, the 28th of February, the wildflower show had already begun along the Potomac. Barely.

Claytonia virginica (spring beauty; Montiaceae)

Just a few dozen of these were up in sheltered locations.

This one specimen of Packera aurea (golden ragwort; Asteraceae) already had well-developed buds. Often this species will retain leaves through the winter, and many low-lying leaves were visible, but I saw none of the tall growth yet. In the same location last year just a few flowers were open on March 23, with peak bloom about April 13; in 2015, I saw the first ones March 24, with peak bloom in mid-April.

Erigenia bulbosa (harbinger-of-spring; Apiaceae)

More about this in an upcoming post. Can you see it sheltering there under the maple leaf? That’s one plant with about 14 flowers!

A few alien species are starting to bloom: Veronica hederifolia (ivy-leaved speedwell) and Cardamine hirsuta (hairy bittercress).

And, I saw one clump of Mertensia virginica (Virginia bluebells) foliage emerging, but that makes a boring photo.

*more on meteorological seasons from NOAA

When One Color Isn’t Enough (part one)

More pictures to keep us dreaming of warmer weather. This time, spring-blooming multi-colored flowers.

Erigenia bulbosa (harbinger-of-spring; Apiaceae)

This is one of our earliest blooming native plants (the only one I can think of that blooms earlier is skunk cabbage). These anthers turn quickly from dark red to black, giving rise to another common name, pepper-and-salt.

Mertensia virginica (Virginia bluebells; Boraginaceae)

That’s right, bluebells again, because here they are in several different colors all in one clump. I can’t wait to see them again.

Galearis spectabilis (showy orchis; Orchidaceae)

This surprisingly common terrestrial orchid grows in all the physiographic provinces in Maryland, but we have the most records for it in the piedmont and coastal plain. Look for it blooming in April and May in rich, moist soils in wooded areas.

Viola sororia (common blue violet, white form ; Violaceae)

Common blue violets are, well, pretty common around here. They seem quite fond of edge areas and open woodlands, always in moist soils. They can be found all over Maryland, blooming from late March into early May.

Cypripedium acaule (pink lady’s slipper; Orchidaceae)

Like most orchids, pink lady’s slipper has specific growing requirements, which means you won’t find it just anywhere. But it does grow pretty much all over the state. Look for it flowering in early May, in rich, undisturbed woodland soils.

Penstemon hirsutus (hairy beardtongue; Plantaginaceae)

This bizarre-looking flower is found mostly in the northern part of Maryland, but there’s a reliable stand on the Billy Goat B trail. Look for it in lean soils (rocky areas) in full sun light, blooming from early to late May.

Mitchella repens (partridgeberry; Rubiaceae) [click on this one!]

What can I write about partridgeberry that I haven’t written before? This is one of my very favorites; I go looking for it every year at the end of May. The plants grow very long but stay very low, creeping along rocks. We have records for it in every Maryland county.

Thalictrum coriaceum (maid-of-the-mist; Ranunculaceae)

Although it isn’t on the Maryland RTE list, we only have records for it in three quads in Montgomery County. I think that’s rather odd, and suspect it’s due to misidentification (see The Botanerd’s Handy Guide to Thalictrum Species). That bright pink on the sepals and filaments turns quickly to brown.

Rosea

There are a lot of pink wildflowers in the Maryland Piedmont. As with blue and purple, “pink” can vary quite a bit, from almost white to practically red.

Claytonia virginica (spring beauty; Portulacaeae)

One of our earliest ephemerals, blooming as early as late February after a warm winter, and lasting into May. In woodland soils almost everywhere. Usually white with a pink tint.

Mertensia virginica (Virginia bluebells; Boraginaceae)

Virginia bluebell buds start violet and turn pink before opening blue, except when the flowers are pure white or pure pink. I visit this stand every year just to make sure that the flowers really are all pink from start of bloom through senescence. They are.

Cercis canadensis (redbud; Fabaceae)

Around here, this understory tree usually blooms in April, when other trees are just starting to blush green. It’s a beautiful effect, though maybe not as stunning as…

 

Rhododendron periclymenoides (pinxter azalea; Ericaceae)

I don’t know that we have a more stunning native shrub than this. I’ve seen it in rocky, wet areas in Rachel Carson Conservation Park and Sugarloaf Mountain; it blooms in mid spring.

Silene caroliniana ssp. pensylvanica (wild pink; Caryophyllaceae)

Look for the flowers in early April to late May. These low-growing plants are often found in dry, rocky soils in open woodlands. There are several stands near Carderock.

 

Valeriana pauciflora (long-tube valerian, large-flower valerian; Valerianceae)

This delicate plant (S1/endangered) has an explosive inflorescence that usually opens in May. A great photo has always eluded me, despite hours and hours and hours of trying, because the plants bloom in the deep shade of dense woods. Shade is the bane of photographers. Maybe this year.

Hibiscus laevis (halberd-leaved rosemallow; Malvaceae)

Unlike the previous species, this one likes bright, sunny riverbanks. I love how it just glows in the light! Sometimes considered a forb and sometimes as a shrub, it’s a very tall plant with stems that get somewhat woody as the season progresses; but, like a forb, it dies back to the crown in autumn. Watch for it in early to mid summer. S3 in Maryland.

Hylodesmum nudiflorum (naked-flower tick trefoil; Fabaceae)

The tick trefoils can be tricky to identify, but this one stands out because the flowers are borne on leafless stems. The genus Desmodium was recently split, with some species placed in a new genus, Hylodesmum. According to the excellent gobotany site, species in the former as sun-loving, and species in the latter are shade-loving.

Desmodium paniculatum (panicled tick-trefoil; Fabaceae)

This one blooms in mid to late summer. It grows in moist to dry soils in sun to part shade, and does well in disturbed areas.

Lespedeza virginica (Fabaceae) Not seen as often as the alien invasive L. sericea, this species grows in dry areas, blooming in mid to late summer.

Asclepias incarnata (swamp milkweed; Apocynaceae)

If you want to spend hours being entertained by bees and butterflies, park yourself in front of a stand of milkweeds. I’ve seen them blooming in wet soils in sunny areas from late June to late August.

Persicaria amphibia (water smartweed; Polygonaceae)

Or, as I prefer to call it, DPP (damn pink persicaria). I’m fairly certain I’ve ID’d it correctly. Sometimes I’m not particularly attracted to a species until I sit and study it awhile and try to get good close-up pictures. So it was with this one. Click on the pic to see it larger. It’s pretty up close!

Sabatia angularis (rosepink; Gentianaceae)

I’ve only seen this plant once, in the shade of a small shrub even though it’s a sun-loving species. Watch for it in dry soils in open places. What a beautiful color.