Contains 5 accepted taxa overall.
Characteristics
Classification
Citation
PITYOPSIS Nuttall, Trans. Amer. Philos. Soc., ser. 2. 7: 317. 1841.
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TYPE: Pityopsis pinifolia (Elliott) Nuttall (Chrysopsis pinifolia Elliott) Lectotypified by Pfeiffer, Nomencl. Bot. 2: 735. 1874.
Species
| Scientific Name | Common Name | Herbarium Specimens | Status | Photos |
|---|---|---|---|---|
| Pityopsis aspera | PINELAND SILKGRASS | Native | ||
| Pityopsis falcata | SICKLELEAF SILKGRASS | Not Native | ||
| Pityopsis flexuosa | ZIGZAG SILKGRASS | Native Rare-State | ||
| Pityopsis graminifolia | NARROWLEAF SILKGRASS | Native UPL (NWPL) | ||
| Pityopsis oligantha | GRASSLEAF GOLDENASTER | Native FACW (NWPL) |
Identification Key
1 . Basal leaves subequal to shorter than the cauline leaves, the cauline leaves not strongly reduced upward; middle and upper cauline leaves ascending to somewhat spreading, 3-20 mm wide
2
1. Basal leaves much longer than the cauline leaves; cauline leaves strongly reduced upward; middle and upper cauline leaves ascending to strict or appressed to the stem, <6 mm wide
5
2. Stems conspicuously flexuous or zigzagged, at least in parts
2. Stems generally straight or curving, not conspicuously zigazagged
3
3. Basal leaves usually persistent when flowering; involucres 8-13 mm long; disc florets >30; stem leaves few, soft and obtuse or slightly acute at apex
3. Basal leaves usually withered when flowering; Involucres 5-9 mm long; disc florets 15-29; stem leaves dense, stiff and sharply pointed at apex
4
4. Cauline leaves ascending
4. Cauline leaves spreading or divergent
5. Upper stem, peduncles, phyllaries, and sometimes distal leaves moderately to densely stipitate-glandular
6
5. Upper stem, peduncles, leaves, and sometimes phyllaries eglandular
7
6. Cauline leaves >10; synflorescence with (4)10-70 heads; involucres 4.5–8 mm long
6. Cauline leaves 2-7; synflorescence with 1-5(10) heads; involucres 9–11 mm long
7. Flowering plants robust, often 50-100 cm tall; largest basal leaves on sterile shoots 15-30 cm long, 5-10 mm wide; largest stem leaves 5-11 cm long, 3-5 mm wide; involucres 12-14 mm high; ray florets 13-25; disc florets >30;
7. Flowering plants more delicate, usually <50 cm tall; basal leaves on sterile shoots 10-25 cm long, 1-3 mm wide; largest stem leaves 2-6 cm long, 1-3 mm wide; involucres 5-8 mm long; ray florets 5-12; disc florets 15-29
8
8. Inner phyllaries densely stipitate-glandular, at least distally
8. Inner phyllaries eglandular to sparsely glandular
Genus Synonyms
| Synonym | Full Citation | Basionym | Type |
|---|---|---|---|
| Hayfeldera | Hayfeldera Schultz Bipontinus, Flora 36: 35. 1853. | TYPE: Hayfeldera sericea Schultz Bipontinus | |
| Hectorea | Hectorea de Candolle, Prodr. 5: 95. 1836. | TYPE: Hectortea villosissima de Candolle |