Category Archives: Native

Plant of the day: calypso orchid

Peeking from the redwood duff, a calypso orchid. Calypso bulbosa, also known as a fairy slipper. This beautiful denizen of the woods is shy but not uncommon. It lifts its nodding head above the forest floor on a smooth purple stem, one or two green leaves lying flat at its base. And what a fearsome-looking flower!

The color can vary from pale pink to deep rose, but around here they are usually lilac-colored. A spikey crown flares upward like a punk-rocker halo. This crown is composed of petals, sepals and bracts all indistinguishable. Beneath, a lilac lobe juts forward, an awning over the burgandy-spotted pouch below. Tucked under the awning are anthers, which are designed to adhere to detach and stick to the backs of foraging insects. It turns out that Calypso orchids are tricksters – their shape suggests to passing insects that they may have nectar, but in fact, they don’t. Yet they depend entirely on this trick for pollination!

A Calypso orchid may live for up to five years (though usually less) and it dies back to its underground corm, or root-like structure, each summer. A new leaf is produced in the fall, and it flowers in the spring. It has a tremendously wide range. You can find it across western and northern United States, Canada, Japan and northern Europe.

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Plant of the day: sticky monkey flower

Have you seen those pale orange flowered bushes that are common in the hills of Marin? Yes, the ones with the dark green and the tubular flowers with a flaring rim like a musical instrument. This is Mimulus aurantiacus (aka bush monkey flower or sticky monkey flower). You won’t find it in the Peterson guide, since it’s technically a bush not a wildflower – but the blooms are pretty and if you pick it for a bouquet you’ll learn where it got its name from when your hands come away sticky. It likes to grow in brushy areas and chaparral, flat places and narrow steep ravines.

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Plant of the day: seep-spring monkey flower

True to its name, this cheerful yellow flower is most often found growing on moist hillsides, along streambanks, and in other wet places. With reddish spots displayed inside it’s splayed lower lip,  Mimulus guttatus (also called common monkey flower) is easy to spot. Its tubular yellow flowers are folded at their opening, like the mouth of a sock puppet. Though joined at the base, they split at their ends into five or six petal-like lobes (depending on whether or not the central lower petal is divided). The plant itself is often dinky (as few as 2 inches high) but it grows up to knee height – three feet if it’s really happy.

There are many other mimulus in the area, but this is the only one that is yellow and has smooth leaves. Tomorrow I’ll write about sticky monkeyflower: the other most common mimulus.

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Plant of the day: hillside morning glory

When you see a low-growing morning glory that doesn’t twine or bind, but instead sits demurely on the earth surrounded by a small mat of hairy silvery leaves, you are probably looking at hillside morning glory, or Coast Range false bindweed (Calystegia collina). The photos below are of a sub-species that can often be seen in Marin on hillsides with serpentine soils – Calystegia collina ssp. collina. I saw this specimin on the Pine Mountain trail.

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One thing that is tricky for a returning botanist like me is that Calystegia was known as Convovulvus back when I was first learning my plants. Yet another pesky name change to keep us on our toes!

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Plant of the day: pussy ears

Here’s another Calochortus to go with yesterday’s star tulip. You can see there is a very strong family resemblance! You also can see where this flower got its name, with such heavily furred ear-shaped petals.

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Pussy ears (Calochortus tolmiei) is the only pale-colored Calochortus (cream or pinkish) in Marin that is NOT listed as a rare species. It is a beloved woodland sight, growing under mixed the spreading boughs of oaks or in redwood forest or even among the small scrubby trunks of chaparral. Even though it is more common, it’s always a treat because of its delicate and distinctive look. You can tell it’s in the lily family, since its petals are in groups of three. Plus, the three broad petals alternate with very long and very narrow sepals, which is the signature look of  most Calochortus.

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Plant of the day: Oakland star tulip

The mariposa lilies are a treat, every one. I was happy to come across an Oakland star tulip, also known as Oakland mariposa lily (Calochortus umbellatus) on Pine Mountain the other day. It can be distinguished from its more common cousin, pussy ears (calochortus tomeii) because it’s petals are only hairy on the lower half, not all the way up. The rocky gaps between clumps of chaparral along the Pine Mountain fire road are an ideal place to find this low-growing lily, which likes nutrient-poor serpentine soils and rocky slopes. It’s worth noting that it can also be found growing under the trees or shrub canopy on moist hillsides, though. Oakland mariposa lily is listed as a rare plant in California because of its limited distribution – it’s mostly found in the Bay Area.

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Plant of the day: bracken fern

Bracken fern is another one of my longtime favorite plants – and not just because the young, furled tips are tasty in salads or while on the trail. This unpretentious plant is both attractive and hardy. You see it in woodsy understories,  on dry hot hillsides, and everywhere in between. In the autumn, it’s dry leaves add a particular, pleasant scent to the fragrance of the forest. Wildlife uses it for food and nesting material; sometimes I’ve found beaten-down areas in larger patches, where deer have bedded down to sleep.

Distinct from other ferns, its large (up to 2 feet) fronds are broadly triangular, and often have an airy quality to them, with a lot of space between each sub-frond. Underneath, the fertile spores are found in a line hugging the edge of every leaflet. Even when these sori aren’t brown and ripe, you can see them as a raised green rim – another good diagnostic clue. None of the many other ferns in the area has this combination of obtuse outline, frond type, large size, and brown spore rim. Pteridium aquilinum can be found growing throughout most of North America. In fact (according to the USDA plants database) the only state in the US that it isn’t found in is South Dakota, which is odd enough that one has to wonder if it’s a data glitch. Or… maybe there is a legit ecological reason that this is the only state our fern has shunned!

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Plant of the day: western star flower

These “woodland stars” twinkle along forested trailsides in the springtime. They are like a high-end graphic designer’s version of a flower, with their many delicately pointed pale pink petals and curving yellow-tipped stamen. The blossom is usually displayed singly, rising from the center of a ring of spring-green leaves. Trientalis latifolia is the only one of its kind found in Marin, and usually grows under redwoods or other evergreens. Though it often can be found in wetlands and moist hillsides it can also thrive in drier spots.

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Plant of the day: balloon clover

Here is another tiny plant of the meadows. When I first saw the arrangement of pointy purple globules, I thought they were the seeds of some spent flower. But when I looked closer I saw the white lips of petals peeking from beneath each point. It turns out the globules aren’t solid, like seeds, at all. Instead this is Trifolium depauperatum, a type of clover where the flower forms an inflated sack – hence its many names (balloon clover, dwarf sack clover, cowbag clover). Click on the photos below to get a better view of this nifty little flower.

There are two features which reveal that this plant is likely to be a clover: first, the three-leafleted leaves, which all clovers have (though some are longer and some are rounder). Second, the fact that the flowers are all clustered together into a single head at the end of the stalk.

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Plant of the day: blue eyed grass

Sisyrinchium bellum, and isn’t it just? Bellum, that is. Or bellisima. On just about every springtime walk you take in Marin you’ll see these striking dark blue/purple flowers so they are a good one to know. Blue eyed grass are almost always blue, though once, last year, I found a pale morph (photo included below). Though they have five regular petals, they are in the iridaceae family along with iris. I see the similarity most in the way the uppermost leaves form a crisscrossing sheath (or “spathe valve“?) around the bottom of the flower.

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