Chimonobambusa quadrangularis

{{Short description|Species of grass}}

{{Speciesbox

| genus = Chimonobambusa

| species = quadrangularis

| authority = (Franceschi) Makino

| synonyms =

{{Species list | hidden = yes

| Arundinaria quadrangularis | (Franceschi) Makino

| Bambusa quadrangularis | Franceschi

| Phyllostachys quadrangularis | (Franceschi) Rendle

| Tetragonocalamus quadrangularis | (Franceschi) Nakai

| Bambos sikaktake | Siebold

| Bambusa sikaktake | Zoll.

| Chimonobambusa quadrangularis f. albostriata | (Muroi & H.Okamura) T.H.Wen

| Chimonobambusa quadrangularis f. aureostriata | (Muroi & H.Okamura) T.H.Wen

| Chimonobambusa quadrangularis f. cyrano-bergeraca | T.H.Wen

| Chimonobambusa quadrangularis f. nagaminea | (H.Okamura) T.H.Wen

| Chimonobambusa quadrangularis f. purpureiculma | T.H.Wen

| Chimonobambusa quadrangularis f. sotaroana | (Muroi) T.H.Wen

| Chimonobambusa quadrangularis f. suow | T.H.Wen

| Tetragonocalamus quadrangularis f. albostriatus | Muroi & H.Okamura

| Tetragonocalamus quadrangularis f. aureostriatus | Muroi & H.Okamura

| Tetragonocalamus quadrangularis f. castillonis | Rifat ex Hirsch

| Tetragonocalamus quadrangularis f. gimmei | Kasahara & H.Okamura

| Tetragonocalamus quadrangularis f. nagamineus | H.Okamura

| Tetragonocalamus quadrangularis var. sotaroanus | Muroi

| Tetragonocalamus quadrangularis f. sotaroanus | (Muroi) Muroi

| Tetragonocalamus quadrangularis f. suow | Kasahara & H.Okamura

| Tetragonocalamus quadrangularis f. tatejima | Kasahara & H.Okamura

| Thamnocalamus quadrangularis | Recht. & Wetter

}}

| synonyms_ref = {{cite POWO |id=395729-1 |title=Chimonobambusa quadrangularis |access-date=2 January 2025}}

}}

Chimonobambusa quadrangularis, commonly called square bamboo or shidakudake is a bamboo in the grass family (Graminae, or Poaceae) and native to China and Taiwan, and naturalized to Japan. It is one of the very few monocots to have square stems. These stems, or culms are up to {{convert|30|ft|0|spell=on}} in height and {{convert|2|in|cm|0|spell=on}} in diameter.{{cite book | last= Hogan | first= Sean | date= 2004 | title= Flora - The Gardener's Bible | location= Willoughby, New South Wales | publisher= Global Book Pub. Pty. Ltd. | page= 371 | isbn= 1-74048-097-X }}