Jepson Flora Project: Jepson Interchange    

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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California

  • Up-to-date information about California vascular plants is available from the Jepson eFlora.



Lawrence R. Heckard, Family Coordinator

Annual to shrubs, generally glandular, some green root-parasites
Stem generally round
Leaves generally alternate, simple, generally ± entire; stipules generally 0
Inflorescence: spike to panicle, generally bracted, or flowers 1–2 in axils
Flower bisexual; calyx lobes generally 5; corolla generally strongly bilateral, generally 2-lipped (upper lip generally 2-lobed, lower lip generally 3-lobed); stamens generally 4 in 2 pairs, generally included, a 5th (generally uppermost) sometimes present as a staminode; pistil 1, ovary superior, chambers generally 2, placentas axile, style 1, stigma lobes generally 2
Fruit: capsule, generally ± ovoid, loculicidal or septicidal
Seed: coat sculpture often characteristic
Genera in family: ± 200 genera, 3000 species: ± worldwide; some cultivated as ornamental (e.g., Antirrhinum, Mimulus, Penstemon ) or medicinal (Digitalis )
Recent taxonomic note: Recently treated to include only Buddleja, Scrophularia, and Verbascum in CA; other genera moved to Orobanchaceae (Castilleja, Cordylanthus, Orthocarpus, Pedicularis, Triphysaria), Phrymaceae (Mimulus), and Plantaginaceae (= Veronicaceae sensu Olmstead et al.)
Key to genera by Elizabeth Chase Neese & Margriet Wetherwax.


Margriet Wetherwax

Stems 1–many, ascending to erect
Leaves generally opposite, clasping, serrate
Inflorescence raceme; bracts 2 below calyx
Flower: sepals 5, free; corolla 5-lobed, 2-lipped, violet to purple, tube 4-angled, upper lip 2-lobed, arched, lower lip reflexed; stamens 4, in 2 pairs, anther sacs well separated by thick tissue; stigma lobes 2, flat
Fruit ± cylindric, loculicidal
Seeds many, netted
Species in genus: ± 20 species: tropical Am
Etymology: (Latin: from "stemodiacra"—stamens with 2 tips)


S. durantifolia (L.) Sw.

Plant glandular-hairy
Stem 10–50 cm
Leaves 2–3 per node, 2–4 cm (smaller upward), lanceolate, widest at base, ± dentate, ± sessile
Inflorescence open; pedicels 2–12 mm; bracts ± = sepals
Flower: sepals 5–7 mm, lanceolate, long-tapered; corolla 7–10 mm
Fruit ± 5 mm, ovoid-cylindric
Ecology: Wet sand or rocks, drying riverbeds
Elevation: < 300 m.
Bioregional distribution: San Jacinto Mountains, Sonoran Desert
Distribution outside California: Arizona, Mexico
Flowering time: Most of year
Horticultural information: TRY.
See the CNPS Inventory for information about endangerment and rarity.
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bioregional map for STEMODIA%20durantifolia being generated

Retrieve Jepson Interchange Index to Plant Names entry for Stemodia durantifolia
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