Children (57 direct children, 106 direct and indirect children):
Penium costatum
Penium cylindrus
(tree size 2)
Penium didymocarpum
(tree size 1)
Penium digittus
Penium exiguum
(tree size 4)
Penium libellula
(tree size 4)
Penium margaritaceum
(tree size 14)
Penium minutum
(tree size 6)
Penium oblongum
(tree size 1)
Penium phymatosporum
(tree size 1)
Penium polymorphum
(tree size 6)
Penium rupestre
Penium silvaenigrae
Penium spinospermum
Penium spinulosum
Penium spirostriolatum
(tree size 3)
Penium amplificatum
Penium asperum
Penium barbaricum
Penium bisporum
Penium blandum
Penium brefeldii
Penium conspersum
(tree size 1)
Penium cuticulare
Penium cylindraceum
Penium delicatulum
Penium diadematum
Penium gonatozygiforme
Penium heimerlianum
Penium incrassatum
Penium lewisii
Penium mesianum
Penium multicostatum
Penium navigium
Penium poeltianum
Penium pseudocostatum
Penium pseudorufescens
Penium rotundum
Penium simplex
Penium spiroplastidium
Penium spirostriolatiforme
(tree size 1)
Penium subcucurbitinum
Penium sublamellosum
Penium subrufescens
Penium subspirostriolatiforme
Penium substriatum
Penium terrestre
Penium thwaitesii
Penium cylindricum
Penium cylindrum
(tree size 1)
Penium diplosporum
Penium globosum
(tree size 3)
Penium lanceolatum
Penium palangula
Penium semistriolatum
Penium spiriostriolatum
(tree size 1)
Penium trabecula