Botanical ]uumal uj the Unllfan Socif!r• 12000!, 134: 19-.19. With 113 figures doi: 10.1 006/bojl.2000.0:163, availabk at http:/ /www.idealibrary.com on Under the rnicroscope: plant anatorny and systernatics. Edited b_y P. ]. Rudall and P. Casson Pollen morphology and wood anatomy of the Crudia group (Leguminosae, Caesalpinioideae, Detarieae) HANNAH BANKS AND PETER GASSON* FLS Royal Botanic Gardens, flew, Richmond, Sumy, TW9 3AB Pollen from all 12 and wood from II genera in the Crudia group haw been examined using light, scanning electron and transmission electron microscopy. This group is currently of systematic interest because it is part of a tribe undergoing taxonomic revision. The pollen grains fall into four groups: (I) Oxystigma, h'ingiodendron, Gossu·eilerodendron, Bathiaea,, Veoapalo>;rlon, Stemonocoleu.1, Guibourtia and Prioria have pollen of a widespread and generalized cacsalpinioid type that arc small to medium sized, spheroidal to prolate, tricolporate and with a perforate exine, with some variation in surface ornamentation, aperture margins and ultrastructure. (2) Crudia pollen is tricolporate. coarsely striate with a coarsely scabratc to vcrmiculate aperture membrane. (3) Augouardia is tricolporate and coarsely reticulate. (4) Hardu·ickia and Colophosperrnum are pantoporate and reticulate or microreticulate-rugulate. The wood of Prioria, O>;r.1tigma, Kingiodendron and Gos.1weilerodendron has diffusely arranged axial canals, and these arc four genera that have recently been merged into Prioria. Bathiaea has tangt>ntially arranged axial canals. The other genera lack normal axial canals. Crudia is distinct, with banded parenchyma and variably storied short rays, Augouardia has much less abundant axial parenchyma that is mainly scanty paratrachcal and vasicentric, Guibourtia has mainly aliform parenchyma and rays variable in height and width, and Colopho.1permum and Hardwickia have similar paratracheal parenchyma patterns, although the rays tend to be wider in the latter. Our conclusion is that the Crudia group is not monophyletic. © 2000 The Linnea I\ Sorict·• of London ADDITIO:\'AL KEY \\'ORDS:-Augouardia - Bathiaea Colopho,,pmnum Gossznilerodendrorz - Guibourtia - Hardwickia -- Kirzgiodendron - .Veoapalo>;rlon - O>;rstir;ma - Prioria - Stemonocoleu.l. Introduction . Material and methods Pollen morphology . Key to pollen . O:tystigma, Bathiaea, J'v'eoapalo:qlon Prioria, ( ;osm-eilerodendron Kingiodendmn Stemonoculeu., Guibourtia Crudia Augouardia CONTE:\'TS *Corresponding author. E-mail: p.gasson@rbgkew.org.uk 19 0024 4074/00/0901119++1 $3.1.00/0 20 21 24 24 25 25 25 2:-l 27 27 27 © :ZOOO The Linne an Socict\· of' London Downloaded from https://academic.oup.com/botlinnean/article/134/1-2/19/2557130 by guest on 19 November 2023