Wildflowers
Saguaro National Park, East Unit
Tucson, ARIZONA

April 1, 1998

I visited Saguaro National Park, East and found lots of bladder pods and wild heliotrope. Fairy duster is past its prime. Odora still is in bloom there as is tackstem. Now is the time for Encelia, brittlebush. Ocotillo is beginning to flower out and there is a fairly good showing of Desert Zinnia (Z. acerosa). Among the smaller flowers is Eriastrum diffusum, the blue miniature wool stem; Salvia columbariae or Chia, and Dyssodia pentachaetia, the five needle fetid marigold are all in bloom. Trixis californicus is beginning to bloom and so is Menodora scabra (yellow menodora) with the reddish sepals and yellow flowers. Menodora scabra bloomed only for one week last July after one of the rains. It is interesting to see the difference that rain makes in the temporal composition of flowers on the landscape.
Reported by Susan Carmody

Water Color © M. Plagens
Milkweed Vine, Sarcostemma cyanchoides, a woody vine with thin, wiry stems supported by trees, shrubs, or very often fences. Milky sap exudes from any broken stem. Distinctive flowers are star-shaped arranged in umbels. Turgid, slightly curved pods are packed with comose (hairy) seeds. Frequent along washes and fencerows. Milkweed Bugs and the Queen Butterfly caterpillar use this plant.


February 27, 1998

Common Name
Family
Genus

Color

Flower Size & Shape

Special Notes and Info

Where to Look

Brittle Bush
Asteraceae
Encelia farinosa

Yellow-Bright

5 cm dia. daisies

shrub mostly 1 m tall; leaves usu. silvery soft

Just a few now, lots of buds, many to come soon.; Road and hillsides

Desert Marigold
Asteraceae
Baileya

Yellow-Bright

All yellow daisy, up to 6 cm dia.

Flowers on tall stems from basal rosette

Just a few now, lots of buds, many to come soon.; Along washes and roadsides

Cryptantha-Popcorn Flower
Boraginaceae
Cryptantha spp.

White

v. small w/5 petals; numerous on a scorpioid inflorescence

low herb w/bristley hairs

Common; Open flats and especially in shade of desert trees

Orange Fiddleneck
Boraginaceae
Amsinkia

Orange

flowers small w/5 petals; flowers many on scorpioid inflorescence

herb 30 to 60 cm tall; inflorescence unfurls in the shape of the end of a violin---hence the common name, Fiddlehead; bristly hairs

Abundant; Esp. in shade of desert trees and shrubs

Bladderpod
Cruciferae
Lesquerella

Yellow-Bright

4 petals; many flowers crowded on spikes

herb 15 to 30 cm tall

Common; forms brilliant carpets of bright yellow across desert flats

Wild Heliotrope
Hydrophylaceae
Phacelia distans

Blue

10mm, 5 petals

Several flowers open at once on scorpioid inflorescence. Herbaceous.

Uncommon; Shade of trees and cliffs

Lupine
Leguminosae
Lupinus sparsiflorus

Blue-Purple

7 mm; Pea Flower

Palmately divided leaves. Spikes of showy flowers

Common; Roadsides, hillsides, flats, sides of trails

Indigo Bush
Leguminosae
Dalea pulchra

Blue-Red

Pea flower;

woody plant

Uncommon; slopes

Bluedicks
Liliaceae
Dichelostema

Blue-Purple

7 mm, 3 petals, somewhat tube-shaped

Several flowers on tall slender stem 30 cm. Grows from bulb. Grass-like leaves

Common; esp. on slopes and hillsides

Desert Globe Mallow
Malvaceae
Sphaeralcia ambigua

Orange-Red-Pink

About 15 mm wide & 5 petals

Robust shrubby herb 2 m tall

Common; Along roadsides, wash banks, and hillsides

Fairy Duster
Mimosoideae
Calliandra

Pink

A puff-ball cluster of anther filaments

A woody shrub < 0.5 m tall

Common; Rocky hillsides, slopes, road edges

Wild Carrot
Umbelliferae
Daucus pusillus

White-Green

minute flowers in umbels

Finely disected carrot leaves. Distinct carrot smell.

Common; in shade of trees and boulders

Desert Zinnia
Asteraceae
Zinnia acerosa

White

15 mm dia. 4 to 6 rays

Low bush, 50 cm tall. Linear leaves.

Common; gentle slopes, flats

Twist Flower
Cruciferae
Streptanthus arizonicus

White w lavend

1 cm tall, 1/2 cm wide, 4 twisted petals

herb usu less than 40 cm

Common; shady spots

Did the drive-around loop at SNME. Encelia farinosa is beginning to bloom. There were a fair number of Zinnia acerosa--the little white flowers. Calliandra eriophylla was glorious. I came upon some stands that are in the "take your breath away" category. There is lots and lots of Amsinckia in bloom in the wash areas. The brassy yellow is very different than the bright yellow of the Lesquerella that is also blooming in some of the same areas. (Also, the flowers are very different, but if you are driving--the first thing you notice is the color)
Another member of the mustard family, Streptanthus arizonicus, is also in bloom. On the road closest to the Rincons are Lupinus sparsiflorus, Dalea pulchra (very nice), Dichelostemma pulchellum (blue dicks--a member of the lily family; smells oniony) and Phacelia distans or wild heliotrope. It has reddish stems; the scorpion weed not so much.
Penstemon parryi is in bud at SNME, but in bloom in my backyard. That means it is really spring. Sphaeralcea ambigua is blooming in the Monument and along roadsides. So is Baileya multiradiata, the desert marigold. Spring in the desert--it's a great time to be here.
Daucus pusillus Michx of the Apiaceae or carrot family are out. It is found in wetter areas and truly does look like a miniature carrot plant. It has whitish green flowers arranged in an umbel.
Bladderpods (Lesquerella gordonii) are noticeable because of their bright yellow color and fairly big flowers--compared to everything else I saw this week.
I did see a Purple Bladderpod--which is white with a tinge of purple striping on it. The scientific name is Lesquerella pupurea. Both of these are in the family Cruciferae.
I also saw another Oenothera primiveris or Bottle Evening Primrose of the Onagraceae family. It is a large flower but very close to the ground. It also is found in damp areas like at the edge of cover from a tree.
Fairy dusters (Calliandra eriophylla, family Fabaceae) are in full bloom with their delicate pink blossoms and are found in drier areas just along the trail.
Jojobas (Simmondsia chinensis, Boxaceae) are basically just about finished blooming.

Contributed by Susan C.



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Copyright Michael J. Plagens, 1998
Updated 1998