Keeping A Sketchbook
TURNING FIELD SKETCHES INTO AUTUMN BOTANICALS
The warm glow of autumn light is reflected in the season's bounty -- acorns, seed pods, fruits, vegetables, brightly colored leaves, and autumn flowers.
Hypochaeris radicata (hairy cat's ear)
| Ligulate flower head showing all ray flowers |
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Side view of flower head showing several rows of bracts or phyllaries |
Cirsium vulgare (bull thistle)
Branch with spines, leaf, and flower head |
Microscopic detail of single pappus hair showing featherlike or plumose pattern |
Flower detail showing inferior ovary, hairy pappus, stamens, and stigma |
Cirsium occidentale (cobweb thistle)
Flower head detail showing spiny bracts in several rows and numerous, narrow, tubular disc flowers |
Astereae (Aster tribe)
a. Erigeron glaucus (seaside daisy)
Top left: Cut-away view of flower head showinghairy bracts, disc flowers on receptable, and peripheral ray flowers. Bottom left: Detail of disc flower showing ingerior ovary, hairy pappus, tubular petals, and 2-forked style. Right: Ray flower. |
CICHORIAEA (CHICORY TRIBE)
b. Agoseris sp. (native dandelion)
Fruiting head showing ovaries, long beaks, and hairy pappus for wind dispersal. |
Left: Ray flower detail showing ligule, cone of stamens, and 2 parted stigma.
Center: Leaf detail.
Right: Flower head showing rows of bracts and numerous ray flowers. |
HELIANTHEAE (SUNFLOWER TRIBE).
Wyethia heleniodes (woolly mule's ear)
Disc flower showing hairy inferior ovary, scalelike pappus, petal tube and petal lobes, stamens, and 2 stigmas. |
HELIANTHEAE SUBTRIBE MADIINAE
(Tarweed subtribe of sunflower tribe)
Left: Flower head showing even row of bracts and ray flowers with a dark patterned base.
Right: Ray flower detail showing bract surrounding ovary, 2 stigmas, and 3-lobed ligule.
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a. Opuntia chlorotica (Mojave prickly-pear).
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b. Opuntia erinacea (old man prickly-pear)
Flower showing spines on the inferior ovary (top)
Cut-away longitudinal view of flower showing numerous stamens |
c. Carnegiea gigantea (saguaro).
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d. Ferocactus cylindraceus (barrel cactus)
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HELIANTHEAE SUBTRIBE HELENIAE
(sneezeweed subtribe of sunflower tribe)
h. Eriophyllum confertiflorum (golden yarrow).
 Microscopic view of disc flower showing crown of scaly pappus (left). Cut-away view of disc flower (right). |
i. Helenium puberulum (sneezeweed)
 Insert: Disc flower detail. Flower head showing buttonlike arrangement of disc flowers and small, turned down ray flowers. Detail of single disc flower (bottom right). |
j. Chaenactis glabriuscula (yellow pincushions).
Fruiting head showing long tapered achenes and starlike pappus scales. |
Aesculus californica (California buckeye)
Palmately compound leaves and panicle of flowers. |
Left: Mature fruit (and 2 aborted fruits) Center: Detail of cut-away flower. Right: Seed. |
INULEAE (EVERLASTING TRIBE)
k. Anaphalis margaritacea (pearly everlasting).
Leafy branch with flowers (left). Flower head detail showing papery phyllaries and disc flowers (right). |
i. Senecio flaccidus var. douglasii (bush senecio)
Flower head showing even row of phyllaries, and ray and disc flowers. |
ERICACEAE (HEATHER FAMILY
a. Arctostaphylos manzanita (common manzanita).
Left: Cut-away longitudinal view of flower showing stamen details (some stamens have been removed for clarity). Right: Leaves and inflorescence. |
b. Rhododendron occidentale (western azalea)
Leaves and cluster of flowers. |
Left: Enlarged pistil and some stamens. Right: Detail of stamen showing pores at end of anther. |
Chimaphila umbellata (pipsisewa)
Face view of flower. |
Sarcodes sanguinea (snowplant)
Habit of flowring plant. |
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