Rare and Endangered of Mt. Tamalpais

The Mt. Tamalpais Interpretive Association is a volunteer organization whose purpose is to promote the conservation, education and interpretation of State Parks, primarily at State Park.

Napa False Indigo (1B.2) Mt. Tamalpais (1B.3) Amorpha californica var. napensis Marin Manzanita (1B.2) hookeri ssp. montana Fabaceae, (Northside trail) Arctostaphylos virgata Corolla bilaterally symmetrical, papilionaceous, (serpentine chapparal) generally conspicuous; 10, only the banner Ericaceae (near camp Alice Eastwood) Corolla 5-lobed; stamens 10; not breaking to is present. Stamens monadelphous, Corolla 5-lobed; stamens 10; fruit not breaking to pieces on the ; Stems erect (or frequently compound. pieces on the plant; , at least near the base of spreading and decumbent), the bark smooth and the inflorescence, usually large, spreading and red; leaves widest at the middle or below, the leaflike in texture; ovary hairy; margins of upper and lower sides alike; Leaves small, usually reflexed from the base of the corolla, stems not less than 2.5 cm long, mostly pungently acute; forming burls at the surface of the ground, leaves young stems and inflorescence white-hairy. ascending, overlapping, bright green; 2-4 mm

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Status Code Definitions: (R.E.D.CNPS) 1B = very rare, 2=rare in California, more common elsewhere, 0.1 = seriously endangered, 0.2 = fairly endangered Thin Lobed Horkelia (1B.2) (Ca/US Status) R = rare; T = threatened, E = Horkelia tenuiloba endangered Rosaceae (Double Bowknot) Mt. Tamalpais thistle (1B.2) Plants herbaceous, annuals or perennials; Western Leatherwood (1B.2) hydrophilum var. vaseyi Acknowledgements: present and showy; style not or only slightly Jordan Herrmann, MTIA, Rare & Endemic Dirca occidentalis (wet serpentine sites) elongated in fruit, never hooked; Recepticle dry in Plants Subcommittee Chair; Marguerite Thymelaeaceae(woodland, E.Bolinas Corollas all tubular and radial, achines lacking fruit, not becoming red and juicy; Stamens 10, Murphy, MTIA Volunteer, Brochure Layout; separated from the recepticle by a space, with no Ridge) stalked-glandular hairs, radial tubular; corollas annular disk at the base of the filiments; petals This, one of the rarest in California, is deeply cleft, lobes 5, mostly linear, length usually Doreen Smith CNPS Marin Chapter(Plant white; Bractlets entire; hypanthium shallowly cup- found only in hills around Bay. In more than three times width; heads discoid; Lists and flower photographs) like or saucer-shaped; Leaves visciduous- the spring, it is also beautiful when its neat dark pappus of bristles (often plumose), setiform scales glandular, scarcely, if at all, villous, leaflets in brown stems are decked with small clusters of or none; recepticals bristly; leaves often spiny, Plant Descriptions: Marin Flora, 2007 10-20 pairs. bright-yellow fragrant flowers. Otherwise it is an plants not dioceious (the flowers bisexual); heads All flower photographs copyright Doreen Smith inconspicuous with soft green leaves and usually more than 2 cm high; stems and upper and used with permission. leaves glabrous (lower side of basal leaves small yellowish-green . (3/30/09) tomentose); corollas light purplish-rose Tiburon Buckwheat (1B.2) Eriogonum luteolum var. caninum Marin County Navarretia (1B.2) N. Coast semaphore grass (1B.1 Ca T) Polygonaceae (serpentine openings) Navarretia rosulata Leaves without stipules; leaves entire; flowers in Mt. Tamalpais Jewel (1B.2) cylindric or turbinate involucres; Involucres Polemoniaceae (dry serpentine) , (foot of Eldridge Streptanthus glandulosus ssp. pulchellus several-flowered, the involucral teeth not spine Leaves alternate; Corolla tubular or salverform; grade) tipped; Leaves mostly basal and white tomentose limb diameter 1.5 cm or less; Calyx lobes spine- Plants perennial; awn 1-3 mm long. Rare in grassy Brassicaceae(Rock Spg, Barth’s Retreat) tipped; Herbaceous calyx rib narrower at base Fruit at least 4 times longer than wide, generally on lower surface; Plants annual; involucres in places on the edge of redwoods. slender interrupted spikes that are generally than membrane; herbage glandular; stigmas 3; oblong to linear; Pubescence of the lower leaves stamens included in corolla tube or barely reaching absent or simple, usually not forked, trifurcate nor sessile; Plants prostrate to ascending; involucres few and lateral; inflorescence more or less evenly its mouth; Corolla less than 7 mm long, corolla dendritic; Calyx more or less urn- or flask-shaped, equaling calyx, white to pale lilac. nearly closed at full flower, often brightly-colored; branched. petals generally strap-shaped; Lower stems and leaves hispidp-hairy; flowers strongly tinged with reddish-violet or purple.

Tamalpais Lessingia (1B.2) Tamalpais Jewel Flower (1B.3) Lessingia micradenia var. micradenia Streptanthus batrachopus Mason’s ceanothus (1B.2 Ca.R.) Asteraceae (dry serpentine areas) Brassicaceae (Northside Tr. Simmons Tr.) Corollas all tubular and radial; Achenes lacking Ceanothus masonii Fruit at least 4 times longer than wide, generally stalked-glandular hairs; Radial (tubular) corollas Rhamnaceae (Bolinas Ridge) oblong to linear; Pubescence of the lower leaves not deeply cleft; lobes 3-5, deltoid, length usually white, bluish or purplish, the petals absent or simple, usually not forked, trifurcate nor less than three times width; Anthers not tailed; conspicuous, 5 or 6 and long-clawed; fruit a three dendritic; Calyx more or less urn- or flask-shaped, herbage rarely wooly; Leaves alternate; involucre valved capsule; leaves opposite, not prominently 3- nearly closed at full flower, often brightly-colored; bracts graduated in 3-5 or more series, recepticles nerved; the stipules becoming corky-thickened; petals generally strap-shaped; Lower stems and Marin Western Flax (1B.1, Ca & F T) naked; anthers connate; style branch appendages leaves generally toothed; leaves with few to many leaves glabrous or sometimes very sparsely hispid; congestum glabrous adaxially; Involucral bracts 4-6mm, teeth, not hollylike; fruit with low wrinkled crests Stems generally less than 2 dm tall; flowers about (Azalea Hill) puberulent with tack-shaped glands; heads between the stubby or slender horns, leaves oblong 0.5 cm long, the sepals purplish-lavender; leaves narrowly turbinate, outer corollas scarcely or not to obovate, usually less than 1 cm broad, with 2-8 mottled purple-brown on upper surface, lower Styles 2-3; ovary chambers 4-6; petals generally at all enlarged; pappus bristles fused into more or 1-6 (-12) mm; fruit 20 mm, 4- or 6-seeded teeth on each side, stems erect, 1-2 m tall, the surface purple. less five 3-parted awns. branchlets rigid.