LacistemataceaeMac H. Alford
This tree diagram shows the relationships between several groups of organisms.
The root of the current tree connects the organisms featured in this tree to their containing group and the rest of the Tree of Life. The basal branching point in the tree represents the ancestor of the other groups in the tree. This ancestor diversified over time into several descendent subgroups, which are represented as internal nodes and terminal taxa to the right.
You can click on the root to travel down the Tree of Life all the way to the root of all Life, and you can click on the names of descendent subgroups to travel up the Tree of Life all the way to individual species.close box
Lacistemataceae are a small neotropical family consisting of two genera and 14 species. The family is characterized by catkin-like cylindrical spikes or spiciform racemes, minute apetalous flowers with a single stamen (usually with an expanded connective), and parietal placentation.
Traditionally, the family has been allied with Salicaceae or Flacourtiaceae. Lacistemataceae were treated as tribe Lacistemeae in Sleumer's (1980) monograph of all neotropical Flacourtiaceae, a family now split mostly among Achariaceae, Salicaceae, and Samydaceae.
Shrubs or small trees. Leaves alternate, stipulate, blades pinnately veined, margins entire to denticulate or serrate. Inflorescences axillary spiciform racemes or catkin-like cylindrical spikes. Flowers minute, bisexual (or polygamous), each flower subtended by a bract. Sepals one to six. Petals lacking. Disk present. Stamen one, attached to the inner surface of disk, anther dehiscence introrse. Gynoecium of one pistil, ovary superior, unilocular, placentation parietal, ovules anatropous, style short or long, stigmas (two or) three. Fruit berry-like, but eventually dehiscent by three loculicidal valves. Seeds one or few, arillate, embryo straight, cotyledons foliaceous.
Chase, M. W., S. Zmarzty, M. D. Lledó, K. J. Wurdack, S. M. Swensen, and M. F. Fay. 2002. When in doubt, put it in Flacourtiaceae: a molecular phylogenetic analysis based on plastid rbcL DNA sequences. Kew Bulletin 57: 141-181.
Chirtoiü, M. 1918. Observations sur les Lacistema et la situation systématique de ce genre. Bull. Soc. Bot. Genève, sér. 2, 10: 317-349.
Sleumer, H. O. 1980. Flacourtiaceae. Flora Neotropica No. 22. Bronx: New York Botanical Garden.
- E-Monograph and Database of Lacistemataceae. Portal for recent research on the family.
Mac H. Alford
University of Southern Mississippi, Hattiesburg, Mississippi, USA
Correspondence regarding this page should be directed to Mac H. Alford at
Page copyright © 2005 Mac H. Alford
All Rights Reserved.
- First online 01 February 2005
Citing this page:
Alford, Mac H. 2005. Lacistemataceae. Version 01 February 2005 (under construction). http://tolweb.org/Lacistemataceae/21145/2005.02.01 in The Tree of Life Web Project, http://tolweb.org/