Relationships between Phuphanochloa

(Bambuseae, Bambusoideae, Poaceae)

and its related genera

Sarawood Sungkaew1, Atchara Teerawatananon2,3

and Trevor R. Hodkinson3

1 Department of Forest Biology, Faculty of Forestry, Kasetsart University, Bangkok, Thailand.2 Thailand Natural History Museum, National Science Museum, Techno polis, Pathum Thani,

Thailand.3 Department of Botany, School of Natural Sciences, Trinity College Dublin, University of

Dublin, Dublin 2, Ireland.

Bambuseae

s.s.

Olyreae

Arundinarieae

P&A

N

TBEP

Olyreae

Neotropical Bambuseae

Palaeotropical and Austral Bambuseae

M

rP&A

Arundinarieae

Bam

bu

soid

eae

s.s.

Pooideae

Ehrhartoideae

OUTGROUP (Panicoideae)

This scenario is now accepted by BPG (Bamboo Phylogeny Group, http://www.eeob.iastate.edu/research/bamboo/),a robust group of researchers working on the diversity, taxonomy, and evolution of bamboos.

Phuphanochloa Sungkaew & Teerawat.,

KEW BULLETIN VOL. 63: 669–673 (2008)

a monotypic genus, consisted of a single species, P. speciosa Sungkaew & Teerawat.

Characters Bambusa Bonia Dendrocalamus

Gigantochloa

Phuphanochloa Thyrsostachys

Habit usually erect

scrambling Usually erect usually erect usually erect usually erect

Branch number at mid-culm branch complement

several single Several several several several

Culm-sheath auricles; oral setae/ Culm-sheath blade

usually conspicuous; always present/ usually erect

usually conspicuous, occasionally inconspicuous or small; usually present, occasionally absent/ erect to deflexed

conspicuous, but often small to absent; present or absent/ erect to deflexed

usually absent or small; usually absent, occasionally present/ erect to deflexed

usually absent or small; always absent/ spreading to deflexed, never erect

usually absent or small; usually absent/ erect, occasionally deflexed

Number of glumes per spikelet

0–3 0–2 (1–)2–4(–9) 1–5 1–4 1–3(–4)

Number of fertile florets per spikelet

2–13 3–9 1–8 (1–)2–5 7–9 1–3

Rachilla internodes

distinct and disarticulating

distinct and disarticulating

obscure and not disarticulating

obscure and not disarticulating

distinct and disarticulating

obscure and not disarticulating

Stigma typically (1–)3, plumose

typically 3, plumose

typically 1(–3), plumose

typically 1, plumose

typically 3, slightly plumose

typically 1–3, plumose

Filaments typically free

typically free typically free always fused into a firm tube

typically free typically free

Breaking up at maturity of spikelets

either break up above the glume(s) or between the florets

unknown usually break up above the glume(s)

usually break up above the glume(s)

usually break up in one of two ways (both of which are usually present on any single individual); either above the glume(s) or above the lowest floret

usually break up above the glume(s)

Comparative table of habit and morphological characters between Bambusa, Bonia, Dendrocalamus, Gigantochloa, Phuphanochloa and Thyrsostachys

Gig_atroviolacea

Gig_scortechinii

Den_asper_BAM1

Den_asper_SS&AT110704-1

Bam_oliveriana

Den_brandisii

Den_copelandii

Den_dumosus

Den_giganteus

Den_hamiltonii

Den_latiflorus

Den_membranaceus

Den_pendulus

Den_sinicus

Den_khoonmengii

Den_strictus

Bam_beecheyana

Bam_chungii

Bam_dolichomerithalla

Bam_pachinensis

Bam_tuldoides

Bam_malingensis

Bam_oldhamii

Bam_emeiensis

Phuphanochloa speciosa

Bam_bambos

Bam_tulda

Gig_albociliata

Gig_ligulata

Thy_siamensis

Cep_pergracile

Sch_zollingeri

Pse_polymorphum

1 change

22

6

1

1

3

1

3

2

2

1

1

2

2

1

11

1

2

4

2

1

1

84

3

5

64

63

100

65

63

83

85

100

85

100

Tree length: 81CI: 0.97RI: 0.98

One of three equally most parsimonious

trees shown as a phylogram obtained from

comparative sequence analysis of combined

trnL-F, atpB-rbcL, rps16 and matK

sequence data. Values above branches

represent the number of steps supporting

each branch. Values below branches

represent the percentages of bootstrap

supporting each branch. Arrow head

represents node not supported by strict

consensus.

Bam = Bambusa

Cep = Cephalostachyum

Den = Dendrocalamus

Gig = Gigantochloa

Pse = Pseudostachyum

Sch = Schizostachyum

Thy = Thyrsostachys

Dendrocalamus khoonmengii sp. nov.

Acknowledgements

o Faculty of Forestry, Kasetsart University, Thailando Trinity College Dublino BRT T_147003

Thanks a million!