Cassandra Odulio
- Date: February 14, 2019
- Time spent there: 1:40pm-4:10pm
- Location: Presidio Coastal Trail, 37°47’43.4″N 122°28’51.1″W
- Habitats seen: rocky outcroppings/cliffs, serpentine rock, rivers/streams, beach/coast
- Weather: overcast/cloudy, chilly, occasional rain.
We left USF at 1:24pm after a slight delay in exiting the parking lot. The Presidio trail had beautiful views of the ocean and the Golden Gate Bridge. There were wooden “stairs” with no handrails and big puddles in each step. This was a pleasant walk, and apparently, the plants there would be similar to those on the field test, so it’s a good place to study.
- Polypodium californicum – California polypody
- Family: Polypodiaceae
- Native
- A fern with leaves dissected to two levels. Orange, organized sori on the underside.
- Habit: Herbaceous. Leaf: summer-deciduous; deltate to ovate, often firm, segments serrate, tips obtuse to acute, veins generally 10–50% fused. Sporangia: round to generally ovate, generally +- sunken, flat.
Ecology: Shaded canyons, streambanks, n-facing slopes, roadcuts, cliffs, coastal bluffs, rocks. 
- Habit: Herbaceous. Leaf: summer-deciduous; deltate to ovate, often firm, segments serrate, tips obtuse to acute, veins generally 10–50% fused. Sporangia: round to generally ovate, generally +- sunken, flat.
- Marah fabacea – CALIFORNIA MAN-ROOT
- Family: Cucurbitaceae
- Native
- Herbaceous vine on ground. Ribbed stem, has little spiral tendrils. Small greenish-white palmate reflex flowers with parts of five. Leaves palmate venation (kind of lobed like a maple leaf).
- Habit: Herbaceous. Flower: corolla rotate, yellow-green to cream or (especially inland) white. Fruit: 4–5 cm, +- spheric. Seed: 2–4, 18–24 mm, ovate to oblong.
Ecology: Streamsides, washes, shrubby open areas. Flowering Time: Feb–Apr 
- Habit: Herbaceous. Flower: corolla rotate, yellow-green to cream or (especially inland) white. Fruit: 4–5 cm, +- spheric. Seed: 2–4, 18–24 mm, ovate to oblong.
- Fragaria chiloensis – BEACH STRAWBERRY
- Family: Rosaceae
- Native
- Herbaceous, on ground. Round trifoliate compound leaves. White flowers with five petals.
- Habit: Often dioecious. Stem: generally 5–20 cm. Leaf: thick, leathery. Flower: generally 20–40 mm wide; hypanthium bractlets unlobed; sepals 6–10 mm; petals (8)10–18 mm. Fruit: receptacle 10–20 mm; achene 1.5–2 mm.
Ecology: Ocean beaches, coastal grassland; Elevation: < 200 m. Bioregional Distribution: NCo, CCo; Distribution Outside California: to Alaska; also coastal South America, Hawaii. Flowering Time: Feb–Nov 
- Habit: Often dioecious. Stem: generally 5–20 cm. Leaf: thick, leathery. Flower: generally 20–40 mm wide; hypanthium bractlets unlobed; sepals 6–10 mm; petals (8)10–18 mm. Fruit: receptacle 10–20 mm; achene 1.5–2 mm.
