Cycas armstrongii

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Family Cycadaceae

Taxonomy: Cycas armstrongii Miq.

Synonyms: 2 (APC 2026-07-30)

Cycas media f. inermis Miq. (nomenclatural synonym)
Cycas media var. inermis A.DC. (nomenclatural synonym)

Distribution (APC): NT

Profiles: APC, Flora of Australia, ALA, iNaturalist, NT eFlora, ATRP

Traits

Top source datasets: ABRS_1981 (5), ABRS_2023 (12), Brock_1993 (10), Chen_2017 (2), Lord_1997 (4), Munroe_2019 (1), NTH_2014 (2), NTH_2023 (17), RussellSmith_2012 (4), Schulze_1998 (7), Wenk_2022 (2), Wenk_2023 (1), Yang_2023 (3). See below for a full list of sources.
Summary: AusTraits contains 35 traits from 70 records in 13 datasets.

Traits by category (click to expand). For categorical traits, the values are listed. For numerical traits, the mean and range are shown.

fire response

resprouting_capacity (categorical): resprouts (2) [sources: RussellSmith_2012; Yang_2023]

leaf morphology

leaf_length (numerical): 413 mm (70-940 mm) [sources: ABRS_2023; Brock_1993; NTH_2023]
leaf_width (numerical): 6.15 mm (3.6-8.8 mm) [sources: ABRS_1981; Brock_1993; NTH_2023]
petiole_length (numerical): 19.25 cm (10-30 cm) [sources: ABRS_2023; NTH_2023]
leaf_mass_per_area (numerical): 146.84 g/m2 (146.84-146.84 g/m2) [sources: Schulze_1998]
leaf_shape (categorical): linear (1) [sources: Brock_1993]
leaf_margin_posture (categorical): flat (2) [sources: ABRS_2023; NTH_2023]
leaf_compoundness (categorical): compound (3) [sources: ABRS_2023; Brock_1993; NTH_2023]
leaf_lamina_posture (categorical): flat (1) [sources: ABRS_2023]
plant_photosynthetic_organ (categorical): leaf (2) [sources: ABRS_2023; NTH_2023]

life history

photosynthetic_pathway (categorical): c3 (1) [sources: Munroe_2019]
plant_growth_form (categorical): palmoid (2); tree (1) [sources: Brock_1993; Lord_1997; Wenk_2022]
life_history (categorical): perennial (2) [sources: Brock_1993; Wenk_2023]
woodiness_detailed (categorical): woody_like_stem (1) [sources: Wenk_2022]
leaf_phenology (categorical): deciduous (1); evergreen (3) [sources: ABRS_1981; Brock_1993; NTH_2014; Schulze_1998]
nitrogen_fixing (categorical): nitrogen_fixer (1) [sources: Schulze_1998]
dispersal_syndrome (categorical): zoochory (1) [sources: Lord_1997]
dispersers (categorical): vertebrates (1) [sources: Lord_1997]
seedbank_longevity_class (categorical): persistent (1) [sources: RussellSmith_2012]
storage_organ (categorical): caudex (1) [sources: Yang_2023]
bud_bank_location (categorical): fleshy_underground_organ (1) [sources: Yang_2023]

nutrient and stable isotope

leaf_N_per_dry_mass (numerical): 21.04 mg/g (21.04-21.04 mg/g) [sources: Schulze_1998]
leaf_delta13C (numerical): -25.6 {delta}[ppth] (-25.6--25.6 {delta}[ppth]) [sources: Schulze_1998]

seed morphology

seed_dry_mass (numerical): 10315.9 mg (10315.9-10315.9 mg) [sources: Lord_1997]
seed_length (numerical): 35.75 mm (29-43 mm) [sources: ABRS_2023; NTH_2023]
seed_width (numerical): 33 mm (26-38 mm) [sources: ABRS_2023; NTH_2023]
seed_shape (categorical): discoid (1); orbicular (1) [sources: ABRS_1981; NTH_2014]

whole plant morphology

plant_height (numerical): 3.5 m (3-4 m) [sources: ABRS_1981; Brock_1993]

Sources

dataset_id	n_traits	n_records	reference
NTH_2023	9	17	D. of Land Resource Management and N. T. of Australia. Northern Territory Flora Online. accessed on 6 May, 2022.. 2022. url: http://eflora.nt.gov.au/.
ABRS_2023	8	12	Australian Biological Resources Study. Flora of Australia, Australian Biological Resources Study, Canberra.. accessed on 14 September, 2022.. 2023. url: http://www.ausflora.org.au.
Brock_1993	8	10	J. Brock and A. Dunlop. Native plants of northern Australia. Reed New Holland, 1993. ISBN: 9781877069246.
Schulze_1998	7	7	E. -. Schulze, R. J. Williams, G. D. Farquhar, W. Schulze, J. Langridge, J. M. Miller, and B. H. Walker. “Carbon and nitrogen isotope discrimination and nitrogen nutrition of trees along a rainfall gradient in northern Australia”. Australian Journal of Plant Physiology 25.4 (1998), pp. 413-425. doi: 10.1071/PP97113.
ABRS_1981	4	5	B. A. Barlow, H. T. Clifford, A. S. George, and A. K. A. McCusker. Flora of Australia. 1981. url: http://www.environment.gov.au/biodiversity/abrs/online-resources/flora/main/.
Lord_1997	4	4	J. Lord, J. Egan, T. Clifford, E. Jurado, M. Leishman, D. Williams, and M. Westoby. “Larger seeds in tropical floras: Consistent patterns independent of growth form and dispersal mode”. Journal of Biogeography 24 (1997), pp. 205-211. doi: 10.1046/j.1365-2699.1997.00126.x.
RussellSmith_2012	4	4	J. Russell-Smith, M. R. Gardener, C. Brock, K. Brennan, C. P. Yates, and B. Grace. “Fire persistence traits can be used to predict vegetation response to changing fire regimes at expansive landscape scales - an Australian example”. Journal of Biogeography 39 (2012), pp. 1657-1668. doi: 10.1111/j.1365-2699.2012.02714.x.
Yang_2023	3	3	S. Yang. “Unpublished data: Fire response traits scored from national and state floras and the taxonomic literature, University of New South Wales”. 2023.
Chen_2017	2	2	Chen, S.-C., Cornwell, W., Z. H.-X., Moles, and A. T. “Plants show more flesh in the tropics: Variation in fruit type along latitudinal and climatic gradients.”. Ecography 40 (2017), pp. 531-538. doi: abs/10.1111/ecog.02010.
NTH_2014	2	2	Northern Territory Herbarium. Flora of the Darwin Region Online. 2014. url: http://www.lrm.nt.gov.au/plants-and-animals/herbarium/darwin_flora_online.
Wenk_2022	2	2	E. Wenk. “Unpublished data: Australian plant growth forms dataset”. 2022.
Munroe_2019	1	1	S. E. M. Munroe, F. A. McInerney, J. Andrae, N. Welti, G. R. Guerin, E. Leitch, T. Hall, S. Szarvas, R. Atkins, S. Caddy-Retalic, and B. Sparrow. “The Photosynthetic Pathways of Plant Species Surveyed in Australia's National Terrestrial Monitoring Network”. Scientific Data 8 (2021), p. 97. doi: 10.1038/s41597-021-00877-z.
Wenk_2023	1	1	E. Wenk. “Unpublished data: Australian plant life history dataset, University of New South Wales, Sydney”. 2023.