Longevity of the Brazilian underground tree <i>Jacaranda decurrens</i> Cham.

ALVES, RUY J.V.; SILVA, NíLBER G. DA; FERNANDES JÚNIOR, ALUíSIO J.; GUIMARÃES, ALESSANDRA R.

doi:10.1590/S0001-37652013005000038

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Biological Sciences • An. Acad. Bras. Ciênc. 85 (2) • June 2013 • https://doi.org/10.1590/S0001-37652013005000038 linkcopy

Longevity of the Brazilian underground tree Jacaranda decurrens Cham.

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstracts

Underground trees are a rare clonal growth form. In this survey we describe the branching pattern and estimate the age of the underground tree Jacaranda decurrens Cham. (Bignoniaceae), an endangered species from the Brazilian Cerrado, with a crown diameter of 22 meters. The mean age calculated for the individual was 3,801 years, making it one of the oldest known living Neotropical plants.

Bignoniaceae; cerrado; campo rupestre; longevity; underground trees

segment	ramet length (cm) per meter of genet radius	years∕m	Age (y)
X-A	246	362	3,982
X-B	215	317	3,484
X-C	331	486	5,351
X-D	267	392	4,314
X-E	280	412	4,529
X-F	238	351	3,857
X-G	236	347	3,816
X-H	235	346	3,808
X-I	237	348	3,833
X-J	162	238	2,613
X-K	211	311	3,418
X-L	199	293	3,223
X-M	197	290	3,186
Mean	235	218	3,801

Ramet	A	B	C	D	E	mean
Ramet length (cm)	22.5	19	27	18.5	25.5	22.5
Mean no. of growth rings	32	30	41	29	33	33
growth rate cm∕y	0.70	0.63	0.66	0.64	0.77	0.68

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