Celmisia Cass.
Capitula solitary on bracted scapes (occ. forms may be found with branched scapes). Phyll. us. ∞, imbricate in several to occ. rather many series, narrow; receptacle pitted, sts strongly so, ± convex. Ray-florets pistillate, us. in 1 row, often ∞; limb white, rarely flushed lilac to pale mauve or very pale yellow. Disk-florets perfect, ∞, corolla funnelform to tubular, 5-toothed, yellow (purple in C. vernicosa, or apparently very rarely very pale yellow). Anthers ± sagittate, tails, if present, very short. Style-arms flattened, apically appendaged. Achenes us. ± narrow-cylindric and ribbed, hairy to glab.; pappus of us. ∞ unequal strongly to weakly barbellate hairs. Perennial herbs or subshrubs of diverse habit; lvs densely tufted or imbricate along branches; us. tomentose, at least on lower surface, petioled or lamina passing almost directly into a persistent sheath. Some 58 spp. endemic to N.Z. and a few in Australia and Tasmania. Type sp. C. longifolia of Australia.
SYNOPSIS
- A. Section LIGNOSAE.
- Subshrubs with hard woody stems and branches; lvs imbricate along the branches, sheaths long-persistent; disk-florets yellow.
- 1. Subsecion IMBRICATAE.
- Living lvs not concentrated in rosulate clusters at tips of branchlets
- (a) Series Robustae.
- Stems and branches and us. branchlets very stout, us. elongate, plants us. straggling:
- 1. walkeri, 2. rupestris, 3. lateralis, 4. ramulosa, 5. gibbsii, 6. brevifolia
- (b) Series Nanae.
- Stems and branches less stout, more compact; plants us. forming close cushions or mats:
- 7. sessiliflora, 8. argentea, 9. laricifolia
- 2. Subsection ROSULATAE.
- Living lvs concentrated in rosulate clusters at tips of branchlets
- (a) Series Discoloratae.
- Upper surface of lamina glab, or with closely appressed hairs or thin pellicle, lower surface clad in satiny white tomentum (or soft white in incana):
- 10. discolor, 11. incana; 12. angustifolia; 13. du-rietzii, 14. lindsayi, 15. bonplandii, 16. haastii; 17. hectori; 18. cockayniana
- (b) Series Viscosae.
- Plants excessively viscid:
- 19. viscosa
- (c) Series Lanatae.
- Both lamina-surfaces clad in dense long matted hairs:
- 20. allanii, 21. macmahonii
- (d) Series Glabratae.
- Both lamina-surfaces glab.:
- 22. sinclairii
- B. Section HERBACEAE.
- Herbs arising from simple to branched hard stocks; lvs in dense tufts (rarely rosulate at tips of branchlets); sheaths us. densely compacted, forming a pseudo-stem. Disk-florets yellow.
- 1. Subsection STOLONIFERAE.
- Plants with us. well-developed stolons or at least multicipital stock; lamina glab, on upper surface, often plicate
- (a) Series Abbreviatae.
- Stock shortly branched, lower surface of lamina with satiny white tomentum:
- 23. densiflora
- (b) Series Elongatae.
- Stolons well-developed, us. lfy, rooting at nodes:
- 24. prorepens, 25. glabrescens
- (c) Series Glandulosae.
- Lamina glandular-pubescent on both surfaces, reticulations evident:
- 26. glandulosae.
- 2. Subsection CAESPITOSAE.
- Stems slender, much-branched, creeping and rooting; plants forming close patches or mats; living lvs in depressed rosulate clusters at tips of branchlets:
- 27. bellidioides, 28. thomsonii, 29. parva
- 3. Subsection SPECTABILES.
- Lamina glab. above or with thin pellicle, below clad in thick felted mass of buff to yellowish (rarely white) hairs; stock often multicipital, or plant spreading by short rhizomes:
- 30. spectabilis
- 4. Subsection PELLICULATAE.
- Upper surface of lamina clad in distinct ± loose pellicle, lower in appressed white satiny tomentum:
- 31. coriacea, 32. monroi, 33. dubia
- 5. Subsection SERRATAE.
- Lamina-margin with distinct acute teeth, not obscured by indumentum:
- 34. hieracifolia, 35. dallii, 36. holosericea
- 6. Subsection PETIOLATAE.
- Lamina with conspicuous petiole, not a mere narrowing in sheath, midrib prominent, upper surface glab. when mature or becoming nearly so
- (a) Series Pallidae.
- Tomentum of lower surface of lamina velvety, white to pale buff:
- 37. hookeri, 38. verbascifolia.
- (b) Series Ferrugineae.
- Tomentum of lower surface of lamina velvety, ferruginous:
- 39. traversii, 40. cordatifolia, 41. praestans, 42. rigida (tomentum white in some forms)
- (c) Series Niveae.
- Tomentum of lower surface of lamina appressed, white, satiny:
- 43. petiolata, 44. rutlandii
- (d) Series Acuminatae.
- Lamina completely glab., ± glaucous-tinged, acuminate; bracts acuminate:
- 45. mackaui
- 7. Subsection ANGUSTATAE.
- Lamina of narrow-lanceolate to linear order
- (a) Series Lanceolatae.
- Lamina stiff, of lanceolate to ensiform order:
- 46. armstrongii, 47. lanceolata, 48. petriei, 49. lyallii; 50. morganii; 51. adamsii, 52. major
- (b) Series Lineares.
- Lamina of narrow-linear order:
- 53. gracilenta, 54. insignis, 55. spedenii, 56. alpina, 57. graminifolia
- C. Section ANTARCTICAE.
- Laminae rigid, very glossy, in dense appressed rosettes at tips of branching stolons, forming small to large mats. Disk-florets purple (occ. "pale lilac to almost mauve"):
- 58. vernicosa
Key
Many of the N.Z. spp. are rather well differentiated, e.g. C. bellidioides, C. walkeri, C. spectabilis; others show a very complex range of forms, e.g. C. discolor, C. incana, C. du-rietzii. Hybridism is frequent, and a number of hybrids, e.g. pseudo-lyallii, poppelwellii, linearis, have been described as spp. or vars. Some of these appear to be sterile F1 forms, or perhaps apomicts. It is impossible therefore, at present, to provide a key that without undue length will deal adequately with the situation. The student will often need to try both branches of a dichotomy and consult the key to the named hybrids.
Celmisia Cass. in Dict. Sci. nat. 37, 1825, 259 is conserved against Celmisia Cass. in Bull. Soc. philom., Paris 1817, 32, and Elcismia Robinson in Proc. Amer. Acad. Arts Sci. 49, 1913, 511. Robinson, accepting Cassini's earlier definition, makes new combinations for the spp. described by Cheeseman in the Man. N.Z. Fl. 1906. These are not further cited here. C. lechleri Sch. Bip. in Bonplandia 4, 1856, 54, from Peru, is unknown to me.
FL. (11)-12-1-(4). FT. c. 1 month after flowering.
Vegetatively the N.Z. spp. fall into three rather well marked groups, but I have not found any correlated flower or fruit characters to justify the erection of subgenera:
A. Stems and branches definitely woody, lvs imbricate along branches, sheaths long-persistent
1. Living lvs not grouped in rosulate clusters at tips of branchlets; e.g. C. lateralis
2. Living lvs grouped in rosulate clusters at tips of branchlets; e.g. C. discolor
B. Lvs arising in dense tufts from a simple to multicipital ± woody stock. Sheaths very closely imbricate, compacted into pseudo-stem; e.g. C. spectabilis
A connecting group is formed by C. bellidioides, C. thomsonii and some forms of C. parva. Stems herbaceous, much-branched, with ∞ branchlets terminated by living lvs in rosulate tufts.