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Largeflower Linanthus
Leptosiphon grandiflorus
About Largeflower Linanthus (Leptosiphon grandiflorus) Nurseries Show All Photos Leptosiphon grandiflorus (syn. Linanthus grandiflorus) is a species of flowering plant in the phlox family known by the common names large-flower linanthus and large flowered leptosiphon.
It is endemic to California, where it is known from the California Coast Ranges of the Central Coast and the San Francisco Bay Area. It grows below 1,200 metres (3,900 ft) in chaparral, coastal prairie, coastal sage scrub, closed-cone pine forest, grassland, and oak woodland habitats. It is California Department of Fish and Wildlife and IUCN listed Vulnerable species, and is on the California Native Plant Society Inventory of Rare and Endangered Plants. Its current range is uncertain because many known occurrences of the plant have been extirpated. Leptosiphon grandiflorus is an annual herb producing a hairy stem with occasional leaves which are each divided into linear lobes up to 3 centimeters long.
The inflorescence at the tip of the stem is a loose cluster of a few white or pinkish funnel-shaped flowers with lobes up to 1. 5 centimeters long. The bloom period is April to July.
Plant Description
Plant Type
Annual herb

Max. Height
6 in (15.2 cm)

Flower Color
Lavender, Pink, White

Flowering Season
Spring, Summer

Native Status
Natural Setting
Site Type
Open, grassy flats, in sandy soil


Elevation ?
21' - 4278'

Annual Precip. ?
10.4" - 49.5"

Summer Precip. ?
0.21" - 0.60"

Coldest Month ?
43.6° F - 51.5° F

Hottest Month ?
59.3° F - 76.1° F

Humidity ?
0.43 vpd - 24.20 vpd

Soil Description
Prefers sand or sandstone


Sunset Zones ?
4*, 5*, 6*, 7, 8, 9, 14*, 15*, 16*, 17*, 18, 19*, 20*, 21*, 22*, 23*, 24*

Landscaping Information
Ease of Care
Moderately Easy

Water Requirement ?
Extremely Low
Very Low
Moderate - High

Common uses
Bee Gardens

Other Names
Botanical Names
Linanthus grandiflorus

Common Names
Large Flowered Leptosiphon, Large-flower Linanthus, Large-flowered Linanthus, Largeflower Deserttrumpets

Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora

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