SPINY-TOOTH GUMWEED
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| File Size: 59 KB |
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Grindelia lanceolata Nutt.
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| Bourbon County, Kansas |
| Biennial or short-lived perennial |
| Height: 8-48 inches |
| Family: Asteraceae - Sunflower Family |
| Flowering Period: August, September,October |
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| Also Called: | | Narrowleaf gumweed. | | Stems: | | Ascending to erect, simple or branched from base or distally, glabrous. | | Leaves: | | Alternate, basal and cauline; petiole absent; narrowly oblanceolate to lanceolate, narrowly elliptic, oblong, or linear, 1.2 to 3.4 inches long, .12 to .6 inch wide, base cuneate to clasping, margins serrate with minutely bristle-tipped teeth, apex acute to acuminate, surfaces not gland-dotted. | | Inflorescences: | | Heads usually in corymb-like arrays, rarely solitary. Involucres urn-shaped to globose, .3 to .6 inch tall, .4 to .8 inch wide. Phyllaries in 5-9 series, lanceolate to linear, apex erect to spreading, outermost sometimes recurved. | | Flowers: | | Ray florets 12-36, pistillate, fertile; corolla yellow; ligules .4 to .6 inch. Disk florets 20-300, usually bisexual; corolla yellow, funnelform, lobes 5. | | Fruits: | | Achenes, ellipsoid to obovoid, slightly compressed, .16 to .24 inch; pappus of 2 smooth awns .16 to .28 inch. | | Habitat: | | Rocky tallgrass prairies, pastures, and glades | | Distribution: | | Southeast 1/4 of Kansas | | Origin: | | Native | | Comments: | | Grindelia for Latvian botanist David Hieronymus Grindel and lanceolata little lance, alluding to the leaf shape. |
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| Spiny-tooth gumweed |  | | 66 KB | | Bourbon County, Kansas |
| | Spiny-tooth gummed head |  | | 44 KB | | Bourbon County, Kansas |
| | Spiny-tooth gumweed |  | | 61 KB | | Bourbon County, Kansas |
| | Spiny-tooth gummed leaves |  | | 72 KB | | Bourbon County, Kansas |
| | Spiny-tooth gummed inflorescences |  | | 56 KB | | Bourbon County, Kansas |
| | Spiny-tooth gumweed |  | | 60 KB | | Bourbon County, Kansas |
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