Christella
publication ID |
https://doi.org/ 10.11646/phytotaxa.331.1.1 |
persistent identifier |
https://treatment.plazi.org/id/03C287EC-FFF5-F806-6CFE-F96FF3D8FE02 |
treatment provided by |
Felipe |
scientific name |
Christella |
status |
|
Key to the Bolivian species of Christella View in CoL (including Amblovenatum and Cyclosorus )
1 Basal veins from adjacent segments united at an obtuse angle below each sinus with an excurrent vein to sinus ......................... 2
– Basal veins from adjacent segments connivent at, or running to, each sinus, or joining at an acute angle just below sinus .......... 4
2 Proximal pinnae the longest or nearly so; costae abaxially with ovate scales; blades abaxially with sessile orangish or reddish, hemispherical glands; rhizomes very long-creeping, blackish, nearly naked .............................................. Cyclosorus interruptus View in CoL
– Proximal pinnae reduced; costae abaxially lacking scales; blades abaxially lacking glands or with short-stipitate, light yellow or orangish glands; rhizomes relatively short-creeping, brown, scaly ................................................................................................. 3
3 Costae abaxially with predominantly short hairs uniform in length, mostly 0.1–0.2 mm long; petioles and rachises usually purplish brown ................................................................................................................................................................................. C. dentata
– Costae abaxially with most hairs> 0.3 mm long with some exceeding 0.5 mm; petioles and rachises stramineous to tan ................ ......................................................................................................................................................................................... C. hispidula
4 Rhizomes suberect to erect, hidden by old leaf bases; proximal pinnae often auriculate at acroscopic bases ................................ 5
– Rhizomes creeping, readily visible; proximal pinnae not auriculate ............................................................................................... 6
5 Blades adaxially glabrous on costules and veins; petiole base scales tan, ovate to ovate-lanceolate, glabrous or nearly so, dull ...... .............................................................................................................................................................................................. C. patens View in CoL
– Blades adaxially hairy on costules and veins; petiole base scales brown, lanceolate, pubescent, shining ..................... C. schizotis View in CoL
6 Several pairs of proximal pinnae greatly reduced; blades adaxially with numerous hairs between veins .................... C. conspersa
– Proximal pinnae not reduced; blades adaxially glabrous between veins ......................................................................................... 7
7 Glands abaxially along veins and costules sulfur-yellow, sessile, especially toward the segment tips and among sporangia; costae abaxially scaleless .................................................................................................................................. Amblovenatum opulentum View in CoL
– Glands absent along veins and costules abaxially and among sporangia; costae abaxially with scales .......................................... 8
8 Costal hairs mostly> 0.2 mm long, dense; costal scales numerous ................................................................................... C. clivalis View in CoL
– Costal hairs ca. 0.1 mm long, moderately dense; costal scales relatively few .................................................................. C. grandis View in CoL
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